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Tiling of the plane by pentagons
geometry, a pentagonal tiling is a tiling of the plane where each individual piece is in the shape of a pentagon. A regular pentagonal tiling on the Euclidean
Pentagonal_tiling
Tiling of the plane by pentagons
particular form of the tiling, dual to the snub square tiling, has tiles with the minimum possible perimeter among all pentagonal tilings. Another, overlaying
Cairo_pentagonal_tiling
Covering by shapes without overlaps or gaps
wallpaper groups. A tiling that lacks a repeating pattern is called "non-periodic". An aperiodic tiling uses a small set of tile shapes that cannot form
Tessellation
Non-periodic tiling of the plane
Penrose tiling is an example of an aperiodic tiling. Here, a tiling is a covering of the plane by non-overlapping polygons or other shapes, and a tiling is
Penrose_tiling
Semiregular tiling of the Euclidean plane
pentagonal tiling is a dual semiregular tiling of the Euclidean plane. It is one of the 15 known isohedral pentagon tilings. Its six pentagonal tiles
Snub_trihexagonal_tiling
Solid with 12 equal pentagonal faces
regular dodecahedron or pentagonal dodecahedron is a dodecahedron (a polyhedron with 12 faces) composed of regular pentagonal faces, three meeting at
Regular_dodecahedron
American amateur mathematician (1923–2017)
American amateur mathematician most famous for her discoveries of pentagonal tilings. Rice was born February 16, 1923, in St. Petersburg, Florida. Marjorie
Marjorie_Rice
Regular tiling of the hyperbolic plane
order-4 pentagonal tiling is a regular tiling of the hyperbolic plane. It has Schläfli symbol of {5,4}. It can also be called a pentapentagonal tiling in a
Order-4_pentagonal_tiling
Shape with five sides
echinoderms with a pentagonal shape. A Ho-Mg-Zn icosahedral quasicrystal formed as a pentagonal dodecahedron. The faces are true regular pentagons. A pyritohedral
Pentagon
Regular tiling of a two-dimensional space
In geometry, the hexagonal tiling or hexagonal tessellation is a regular tiling of the Euclidean plane, in which exactly three hexagons meet at each vertex
Hexagonal_tiling
Regular tiling of the hyperbolic plane
the order-5 pentagonal tiling is a regular tiling of the hyperbolic plane. It has Schläfli symbol of {5,5}, constructed from five pentagons around every
Order-5_pentagonal_tiling
Euclidean 3-space) 1 p + 1 q = 1 2 : Euclidean plane tiling 1 p + 1 q < 1 2 : Hyperbolic plane tiling {\displaystyle {\begin{aligned}&{\frac {1}{p}}+{\frac
List_of_regular_polytopes
truncated order-5 pentagonal tiling is a regular tiling of the hyperbolic plane. It has Schläfli symbol of t0,1{5,5}, constructed from one pentagons and two decagons
Truncated order-5 pentagonal tiling
Truncated_order-5_pentagonal_tiling
Semiregular tiling of the plane
tiling is a semiregular tiling of the Euclidean plane. There are three triangles and two squares on each vertex. It is named as a triangular tiling elongated
Elongated_triangular_tiling
Polyhedron with 2 faces
called bihedra, flat polyhedra, or doubly covered polygons. As a spherical tiling, a dihedron can exist as nondegenerate form, with two n-sided faces covering
Dihedron
colorings of the 11 uniform tilings: Triangular tiling – 9 uniform colorings, 4 wythoffian, 5 nonwythoffian Square tiling – 9 colorings: 7 wythoffian
List of Euclidean uniform tilings
List_of_Euclidean_uniform_tilings
Symmetric subdivision in hyperbolic geometry
hyperbolic geometry, a uniform hyperbolic tiling (or regular, quasiregular or semiregular hyperbolic tiling) is an edge-to-edge filling of the hyperbolic
Uniform tilings in hyperbolic plane
Uniform_tilings_in_hyperbolic_plane
Polyhedron with 24 faces
quotient space of the hyperbolic order-4 pentagonal tiling, by distorting the pentagrams back into regular pentagons. As such, it is topologically a regular
Dodecadodecahedron
Uniform tiling of the hyperbolic plane
In geometry, the truncated order-4 pentagonal tiling is a uniform tiling of the hyperbolic plane. It has Schläfli symbol of t0,1{5,4}. A half symmetry
Truncated order-4 pentagonal tiling
Truncated_order-4_pentagonal_tiling
Tiling of the hyperbolic plane
In geometry, a binary tiling (sometimes called a Böröczky tiling) is a tiling of the hyperbolic plane, resembling a quadtree over the Poincaré half-plane
Binary_tiling
Kepler–Poinsot polyhedron
composed of 12 pentagonal faces (six pairs of parallel pentagons), intersecting each other making a pentagrammic path, with five pentagons meeting at each
Great_dodecahedron
In 2-dimensional hyperbolic geometry, the infinite-order pentagonal tiling is a regular tiling. It has Schläfli symbol of {5,∞}. All vertices are ideal
Infinite-order pentagonal tiling
Infinite-order_pentagonal_tiling
Uniform tiling of the plane using regular polygons
seen combining the prismatic pentagonal tiling and Cairo pentagonal tilings. Grünbaum, Branko; Shephard, G. C. (1987). Tilings and Patterns. W. H. Freeman
33344-33434_tiling
Uniform tiling of the Euclidean plane
truncated trihexagonal tiling has three related 2-uniform tilings, one being a 2-uniform coloring of the semiregular rhombitrihexagonal tiling. The first dissects
Truncated_trihexagonal_tiling
truncated order-6 pentagonal tiling is a uniform tiling of the hyperbolic plane. It has Schläfli symbol of t1,2{6,5}. The dual of this tiling represents the
Truncated order-6 pentagonal tiling
Truncated_order-6_pentagonal_tiling
Type of tessallation
In geometry, the sphinx tiling is a tessellation of the plane using the "sphinx", a pentagonal hexiamond formed by gluing six equilateral triangles together
Sphinx_tiling
Method of describing higher-order polyhedra
square tiling tQ = bQ Tetrakis square tiling kQ = mQ Snub square tiling sQ Cairo pentagonal tiling gQ Hexagonal tiling H = dΔ = tΔ Trihexagonal tiling aH
Conway_polyhedron_notation
Semiregular tiling of the hyperbolic plane
triangles: The dual tiling is called an order-7-3 floret pentagonal tiling, and is related to the floret pentagonal tiling. This semiregular tiling is a member
Snub_triheptagonal_tiling
order-4-3 pentagonal honeycomb or 5,4,3 honeycomb is a regular space-filling tessellation (or honeycomb). Each infinite cell is an order-4 pentagonal tiling whose
Order-4-3 pentagonal honeycomb
Order-4-3_pentagonal_honeycomb
Regular tiling of the hyperbolic plane
geometry, the order-6 pentagonal tiling is a regular tiling of the hyperbolic plane. It has Schläfli symbol of {5,6}. This regular tiling can also be constructed
Order-6_pentagonal_tiling
Polyhedron with 10 faces
a pentagonal trapezohedron is the third in the infinite family of trapezohedra, face-transitive polyhedra. Its dual polyhedron is the pentagonal antiprism
Pentagonal_trapezohedron
Pentagon with all sides equal but the angles may not be equal
March 2011, 102-107. Schattschneider, Doris (1978), "Tiling the plane with congruent pentagons", Mathematics Magazine, 51 (1): 29–44, doi:10.1080/0025570X
Equilateral_pentagon
Semiregular tiling of the plane
In geometry, the snub square tiling is a semiregular tiling of the Euclidean plane. There are three triangles and two squares on each vertex. Its Schläfli
Snub_square_tiling
Regular tiling of the hyperbolic plane
geometry, the order-5 square tiling is a regular tiling of the hyperbolic plane. It has Schläfli symbol of {4,5}. This tiling is topologically related as
Order-5_square_tiling
Shape subdivided into copies of itself
shape necessarily forms the prototile for a tiling of the plane, in many cases a nonperiodic tiling. A rep-tile dissection using different sizes of the original
Rep-tile
geometry, the chamfered square tiling or semitruncated square tiling is a tiling of the Euclidean plane. It is a square tiling with each edge chamfered into
Chamfered_square_tiling
the order-4-4 pentagonal honeycomb a regular space-filling tessellation (or honeycomb). Each infinite cell consists of a pentagonal tiling whose vertices
Order-4-4 pentagonal honeycomb
Order-4-4_pentagonal_honeycomb
Chemical compound
hypothetical carbon allotrope composed entirely of carbon pentagons and resembling the Cairo pentagonal tiling. Penta-graphene was proposed in 2014 on the basis
Penta-graphene
Mathematics book
topics in tiling theory: colored patterns and tilings, polygonal tilings, aperiodic tilings, Wang tiles, and tilings with unusual kinds of tiles. Each chapter
Tilings_and_patterns
Generalisation of dice with identical faces
tiling (m = 1) has congruent faces, either directly or reflectively, which occur in one or more symmetry positions. An m-hedral polyhedron or tiling has
Isohedral_figure
Natural number
There are 15 monohedral convex pentagonal tilings, with eight being edge-to-edge. There are 15 regular and semiregular tilings when infinite (improper) apeirogonal
15_(number)
Regular tiling of hyperbolic 3-space
and pentagonal prism cells, with a mirrored sphenoid vertex figure. The runcinated order-5 dodecahedral honeycomb, , has dodecahedron and pentagonal prism
Order-5 dodecahedral honeycomb
Order-5_dodecahedral_honeycomb
pentapentagonal tiling is a uniform tiling of the hyperbolic plane. It has Schläfli symbol of sr{5,5}, constructed from two regular pentagons and three equilateral
Snub_pentapentagonal_tiling
Convex polyhedron with 72 faces
The order-5 truncated pentagonal hexecontahedron is a convex polyhedron with 72 faces: 60 hexagons and 12 pentagons triangular, with 210 edges, and 140
Order-5 truncated pentagonal hexecontahedron
Order-5_truncated_pentagonal_hexecontahedron
order-5 apeirogonal tiling is a regular tiling of the hyperbolic plane. It has Schläfli symbol of {∞,5}. The dual to this tiling represents the fundamental
Order-5_apeirogonal_tiling
vertex in an octagonal tiling vertex figure. It is a part of a sequence of regular honeycombs with order-8 triangular tiling cells: {3,8,p}. It is a
Order-8-3 triangular honeycomb
Order-8-3_triangular_honeycomb
Solid with twenty equal triangular faces
can be constructed from a pentagonal antiprism by attaching two pentagonal pyramids with regular faces to each of its pentagonal faces, or by putting points
Regular_icosahedron
Regular tiling of hyperbolic 3-space
analogous to the 2D hyperbolic truncated order-4 pentagonal tiling, t{5,4} with truncated pentagon and square faces: The bitruncated order-4 dodecahedral
Order-4 dodecahedral honeycomb
Order-4_dodecahedral_honeycomb
Classification of a two-dimensional repetitive pattern
panelling, the Alhambra, Spain Persian ornament Floret pentagonal tiling 7 co-uniform tiling with horizontal and 60° translations Orbifold signature:
Wallpaper_group
Tessellation Uniform tiling Convex uniform honeycombs List of k-uniform tilings List of Euclidean uniform tilings Uniform tilings in hyperbolic plane Weisstein
List_of_tessellations
Uniform tiling of the hyperbolic plane
floret pentagonal tiling, defined by face configuration V3.3.4.3.5. The snub tetrapentagonal tiling is fourth in a series of snub polyhedra and tilings with
Snub_tetrapentagonal_tiling
Topics referred to by the same term
a literary group based in Cairo, Egypt, during World War II Cairo pentagonal tiling, a geometrical pattern All pages with titles beginning with Cairo
Cairo_(disambiguation)
Tiling of hyperbolic 3-space by uniform polyhedra
order-4 pentagonal tilings ) and (which is the prism of the order-4 pentagonal tiling, having pentagonal prisms and order-4 pentagonal tilings ). These
Uniform honeycombs in hyperbolic space
Uniform_honeycombs_in_hyperbolic_space
ideal boundary) with five order-5 pentagonal tilings existing around each edge and with an order-5 pentagonal tiling vertex figure. In the geometry of
Order-5-4_square_honeycomb
Strunk, and Georg Tamme, 2018) Yau's conjecture (Antoine Song, 2018) Pentagonal tiling (Michaël Rao, 2017) Willmore conjecture (Fernando Codá Marques and
List of unsolved problems in mathematics
List_of_unsolved_problems_in_mathematics
geometry, the 4-5 kisrhombille or order-4 bisected pentagonal tiling is a semiregular dual tiling of the hyperbolic plane. It is constructed by congruent
4-5_kisrhombille
infinitely many icosahedra existing around each vertex in an order-4 pentagonal tiling vertex arrangement. It has a second construction as a uniform honeycomb
Order-4_icosahedral_honeycomb
Polyhedron with 30 faces
order-5 square tiling is dual to the order-4 pentagonal tiling, and a quotient space of the order-4 pentagonal tiling is topologically equivalent to the dual
Medial rhombic triacontahedron
Medial_rhombic_triacontahedron
space-filling tessellation (or honeycomb). Each infinite cell consists of a pentagonal tiling whose vertices lie on a 2-hypercycle, each of which has a limiting
Order-5-3_square_honeycomb
Form of plane tiling without repeats at scale
non-periodic tiling is a tiling that does not have any translational symmetry. An aperiodic set of prototiles is a set of tile-types that can tile, but only
Aperiodic_tiling
Uniform tiling of the hyperbolic plane
media related to Uniform tiling 4-5-4-5. Binary tiling, an aperiodic tiling of the hyperbolic plane by pentagons Uniform tilings in hyperbolic plane List
Tetrapentagonal_tiling
Geometric object with flat sides
hyperbolic tilings, such as the icosahedral honeycomb {3,5,3}, and order-5 pentagonal tiling {5,5}. In 2 dimensions, all regular polygons (regular 2-polytopes)
Polytope
Pattern in hyperbolic geometry
In geometry, the snub tetrahexagonal tiling is a uniform tiling of the hyperbolic plane. It has Schläfli symbol of sr{6,4}. Drawn in chiral pairs, with
Snub_tetrahexagonal_tiling
Concept in mathematics
In geometry, the snub tetraoctagonal tiling is a uniform tiling of the hyperbolic plane. It has Schläfli symbol of sr{8,4}. Drawn in chiral pairs, with
Snub_tetraoctagonal_tiling
Archimedean solid with 32 faces
icosidodecahedron or pentagonal gyrobirotunda is a polyhedron with twenty (icosi-) triangular faces and twelve (dodeca-) pentagonal faces. An icosidodecahedron
Icosidodecahedron
honeycombs with order-7 triangular tiling cells: {3,7,p}. It is a part of a sequence of regular honeycombs with heptagonal tiling vertex figures: {p,7,3}. In
Order-7-3 triangular honeycomb
Order-7-3_triangular_honeycomb
icosahedron Square tiling Triangular tiling Hexagonal tiling Apeirogon Dihedron Lobachevski plane Hyperbolic tiling Order-7 heptagrammic tiling Heptagrammic-order
List_of_mathematical_shapes
In geometry, the truncated order-5 square tiling is a uniform tiling of the hyperbolic plane. It has Schläfli symbol of t0,1{4,5}. John H. Conway, Heidi
Truncated order-5 square tiling
Truncated_order-5_square_tiling
Complex structures in matter physics
regular pentagonal bi-pyramid. However, we are facing now a real packing problem, analogous to the one encountered above with the pentagonal tiling in two
Geometrical_frustration
Catalan solid with 24 faces
In geometry, a pentagonal icositetrahedron or pentagonal icosikaitetrahedron is a Catalan solid which is the dual of the snub cube. In crystallography
Pentagonal_icositetrahedron
the ideal boundary) with five order-4 pentagonal tilings existing around each edge and with an order-5 square tiling vertex figure. It a part of a sequence
Order-4-5 pentagonal honeycomb
Order-4-5_pentagonal_honeycomb
Five tiles used in Islamic decorative art
for the imagination. Aperiodic tiling Moorish architecture Penrose tiling Tadelakt Topkapı Scroll Zellij Truchet tile Sarhangi, Reza (2012). "Interlocking
Girih_tile
Concept in mathematics
Snub hexagonal tiling Floret pentagonal tiling Order-3 heptagonal tiling Tilings of regular polygons List of uniform planar tilings Kagome lattice Weisstein
Snub_trioctagonal_tiling
In geometry, the truncated order-5 hexagonal tiling is a uniform tiling of the hyperbolic plane. It has Schläfli symbol of t0,1{6,5}. John H. Conway, Heidi
Truncated order-5 hexagonal tiling
Truncated_order-5_hexagonal_tiling
hexagonal tiling facets, with a pentagonal pyramid vertex figure. The bitruncated order-5 hexagonal tiling honeycomb, t1,2{6,3,5}, has hexagonal tiling and
Order-5 hexagonal tiling honeycomb
Order-5_hexagonal_tiling_honeycomb
British mathematician (1854–1929)
since it clashes against our prejudices. Cairo pentagonal tiling, a tiling of the plane by pentagons also called "MacMahon's net" Stein, Paul R. (1979)
Percy_Alexander_MacMahon
Concept in mathematics
In geometry, the snub tetraapeirogonal tiling is a uniform tiling of the hyperbolic plane. It has Schläfli symbol of sr{∞,4}. Drawn in chiral pairs, with
Snub_tetraapeirogonal_tiling
Convex polygon which can tile the plane by itself
Laves tilings are unique except for the square tiling (1 degree of freedom), barn pentagonal tiling (1 degree of freedom), and hexagonal tiling (2 degrees
Planigon
order-3 apeirogonal tiling vertex figure. It is a part of a sequence of regular honeycombs with Infinite-order triangular tiling cells: {3,∞,p}. It is
Order-infinite-3 triangular honeycomb
Order-infinite-3_triangular_honeycomb
In geometry, the snub hexaoctagonal tiling is a semiregular tiling of the hyperbolic plane. There are three triangles, one hexagon, and one octagon on
Snub_hexaoctagonal_tiling
6,3}, with three order-6 pentagonal tilings meeting at each edge. The vertex figure of this honeycomb is a hexagonal tiling, {6,3}. In the geometry of
Order-6-3_square_honeycomb
Spherical polyhedron composed of lunes
must have at least three sides. When considering polyhedra as a spherical tiling, this restriction may be relaxed, since digons (2-gons) can be represented
Hosohedron
In geometry, the snub triapeirogonal tiling is a uniform tiling of the hyperbolic plane with a Schläfli symbol of sr{∞,3}. Drawn in chiral pairs, with
Snub_triapeirogonal_tiling
Subdivision of the plane into polygons that are all regular
vertices with 2 different vertex types, so this tiling would be classed as a "3-uniform (2-vertex types)" tiling. Broken down, 36; 36 (both of different transitivity
Euclidean tilings by convex regular polygons
Euclidean_tilings_by_convex_regular_polygons
Materials made only out of carbon
carbon allotrope that utilizes the Cairo pentagonal tiling. U carbon is predicted to consist of corrugated layers tiled with six- or 12-atom rings, linked by
Allotropes_of_carbon
Operation in Euclidean geometry
of any regular self-dual polyhedron or tiling will result in another regular polyhedron or tiling with a tiling order of 4, for example the tetrahedron
Rectification_(geometry)
uniform tilings Uniform tilings in hyperbolic plane Archimedean tiling Square tiling Triangular tiling Hexagonal tiling Truncated square tiling Snub square
List of polygons, polyhedra and polytopes
List_of_polygons,_polyhedra_and_polytopes
Archimedean solid with 62 faces
of 62 faces: 20 regular triangular faces, 30 square faces, 12 regular pentagonal faces, with 60 vertices, and 120 edges. Johannes Kepler in Harmonices
Rhombicosidodecahedron
Algebraic surface
its dual in violet. It is a quotient of the order-4 pentagonal tiling and its dual square tiling. 20-gon edges marked with the same letter are equal.
Bring's_curve
Polyhedron with 12 faces
self-intersecting equilateral pentagonal faces. A tetartoid (also tetragonal pentagonal dodecahedron, pentagon-tritetrahedron, and tetrahedric pentagon dodecahedron)
Dodecahedron
Polyhedron with 24 faces
quotient space of the hyperbolic order-6 pentagonal tiling, by distorting the pentagrams back into regular pentagons. As such, it is a regular polyhedron
Ditrigonal_dodecadodecahedron
Concept in mathematics
floret pentagonal tiling, defined by face configuration V3.3.4.3.7. The snub tetraheptagonal tiling is sixth in a series of snub polyhedra and tilings with
Snub_tetraheptagonal_tiling
American mathematician
pentagonal tiles in Scientific American. She investigated, and devising her own notation system, found a previously unknown type of pentagon tiling by
Doris_Schattschneider
Shape with three equal sides
tiles the Euclidean plane with six triangles meeting at a vertex; the dual of this tessellation is the hexagonal tiling. Truncated hexagonal tiling,
Equilateral_triangle
Ordered chemical structure with no repeating pattern
quasicrystals. In 1961, Hao Wang asked whether determining if a set of tiles admits a tiling of the plane is an algorithmically unsolvable problem or not. He
Quasicrystal
Catalan solid with 60 faces
The pentagonal hexecontahedron can be constructed from a snub dodecahedron without taking the dual. Pentagonal pyramids are added to the 12 pentagonal faces
Pentagonal_hexecontahedron
Regular non-convex polygon
Geoffrey C. Shephard, Tilings by Regular Polygons, Mathematics Magazine #50 (1977), pp. 227–247, and #51 (1978), pp. 205–206 Tiling with Regular Star Polygons
Star_polygon
Regular tiling of hyperbolic 3-space
icosahedron cells, with a pentagonal pyramid vertex figure. It can be seen as analogous to the 2D hyperbolic truncated order-5 square tiling, t{4,5}, with truncated
Order-5_cubic_honeycomb
Solid with 2 parallel n-gonal bases connected by n parallelograms
Prisms are named after their bases, e.g. a prism with a pentagonal base is called a pentagonal prism. Prisms are a subclass of prismatoids. Like many basic
Prism_(geometry)
Polyhedron with eight triangular faces
Johnson solid, obtained by removing three pentagonal pyramids from a regular icosahedron, resulting in three pentagonal and five triangular faces. Heptagonal
Octahedron
PENTAGONAL TILING
PENTAGONAL TILING
Surname or Lastname
English and Irish
English and Irish : unexplained; most probably a habitational name from a lost or unidentified place somewhere in South Wales or southern England. This name was established in County Meath, Ireland, soon after the Anglo-Norman invasion of the 12th century.Dutch : unexplained.Probably a respelling of German Tiling, a patronymic form of Thiel.
PENTAGONAL TILING
PENTAGONAL TILING
Boy/Male
Muslim
Goodness
Girl/Female
French
Feminine of Charles meaning manly.
Boy/Male
Arabic, Muslim
Early
Girl/Female
Hindu, Indian, Sanskrit
Goodness
Boy/Male
Tamil
Sriman | à®·à¯à®°à¯€à®®à®¾à®¨
Boy/Male
Armenian
Descended from Peter.
Boy/Male
French, German
Unhappy; Unlucky
Surname or Lastname
English
English : probably a habitational name, perhaps from Darnford in Suffolk, Great Durnford in Wiltshire, or Dernford Farm in Sawston, Cambridgeshire, all named from Old English dierne ‘hidden’ + ford ‘ford’.Nicholas Danforth, a man of considerable property, emigrated in about 1634 with his children to Cambridge, MA, from Framlingham, Suffolk, England, after the death of his wife Elizabeth. He was elected to various political offices in the colony. His son Thomas (1623–99) was admitted as a freeman in 1643 and was named treasurer of Harvard College in the 1650 charter granted that institution.
Girl/Female
German, Latin
Old; Prosperous; Small Winged One
Boy/Male
Indian, Punjabi, Sikh
Lord of the World
PENTAGONAL TILING
PENTAGONAL TILING
PENTAGONAL TILING
PENTAGONAL TILING
PENTAGONAL TILING
n.
A plane figure having five angles, and, consequently, five sides; any figure having five angles.
a.
Having seven angles or sides.
n.
The edge of the tiling projecting over the gable of a roof.
n. pl.
A class of Echinodermata including the true starfishes. The rays vary in number and always have ambulacral grooves below. The body is star-shaped or pentagonal.
p. pr. & vb. n.
of Tile
a.
Of or pertaining to plants of the order Pentagyna; having five styles.
n.
A surface covered with tiles, or composed of tiles.
a.
Heptagonal.
adv.
In the form of a pentagon; with five angles.
n.
The pentagonal dodecahedron, a common form of pyrite.
n.
A pentagon.
a.
Pentagonal.
n.
A wooden vessel for the mortar used in tiling or masonry, hung by a hook from the laths, or from the rounds of a ladder.
n.
A part of the tiling which projects beyond the principal rafters, in buildings where there is a gable.
a.
Having five corners or angles.
n.
Tiles, collectively.