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Search references for INTEGER TRIANGLE. Phrases containing INTEGER TRIANGLE
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Triangle with integer side lengths
An integer triangle or integral triangle is a triangle all of whose side lengths are integers. A rational triangle is one whose side lengths are rational
Integer_triangle
Triangle whose side lengths and area are integers
Heronian triangle (or Heron triangle) is a triangle whose side lengths a, b, and c and area A are all positive integers. Heronian triangles are named
Heronian_triangle
Integer side lengths of a right triangle
for any positive integer k. A triangle whose side lengths are a Pythagorean triple is a right triangle and called a Pythagorean triangle. A primitive Pythagorean
Pythagorean_triple
Triangles without a right angle
acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°). An obtuse triangle (or obtuse-angled triangle) is a triangle
Acute_and_obtuse_triangles
Right triangle with a feature making calculations on the triangle easier
ratio of two integers. However, infinitely many almost-isosceles right triangles do exist. These are right-angled triangles with integer sides for which
Special_right_triangle
Array of partial sums of the binomial coefficients
Bernoulli's triangle is an array of partial sums of the binomial coefficients. For any non-negative integer n and for any integer k included between 0
Bernoulli's_triangle
Figurate number
numbers or triangle numbers are the sequence of positive integers that can be represented as a lattice of points arranged in an equilateral triangle. The triangular
Triangular_number
Online database of integer sequences
The On-Line Encyclopedia of Integer Sequences (OEIS) is an online database of integer sequences. It was created and maintained by Neil Sloane while researching
On-Line Encyclopedia of Integer Sequences
On-Line_Encyclopedia_of_Integer_Sequences
Set of integers, the lengths of the sides of a triangle with a 60° angle
set of integers which are the lengths of the sides of a triangle where one of the angles is 60 or 120 degrees. The relation of such triangles to the Eisenstein
Eisenstein_triple
Formula for area of a grid polygon
the polygon into triangles with three integer vertices and no other integer points. One can then prove that each subdivided triangle has area exactly
Pick's_theorem
Division of something into two equal or congruent parts
} No two non-congruent triangles share the same set of three internal angle bisector lengths. There exist integer triangles with a rational angle bisector
Bisection
Triangle containing a 90-degree angle
A right triangle or right-angled triangle, sometimes called an orthogonal triangle or rectangular triangle, is a triangle in which two sides are perpendicular
Right_triangle
of achiral integer partitions of 51 1581 = number of edges in the hexagonal triangle T(31) 1582 = a number such that the integer triangle [A070080(1582)
1000_(number)
Triangular array of the binomial coefficients
once observed that the first five rows of Pascal's triangle, when read as the digits of an integer, are the corresponding powers of eleven. He claimed
Pascal's_triangle
Polygon mesh composed of triangles
are[citation needed] Vertex = <integer>; // v Edge = <integer, integer>; // v0, v1 Triangle <integer,integer,integer>; // v0, v1, v2 VData = <application-specific
Triangle_mesh
There is a primitive integer-sided automedian triangle that is not generated from a right triangle: namely, the equilateral triangle with sides of unit
Automedian_triangle
Heronian triangle Integer triangle Pythagorean triple Eisenstein triple Bermuda Triangle Historic Triangle Lithium Triangle Parliamentary Triangle, Canberra
List_of_triangle_topics
Triangle of numbers
In a format similar to that of Pascal's triangle, and in the order listed in the On-Line Encyclopedia of Integer Sequences (OEIS), its first few rows are:
Bell_triangle
This is a list of notable integer sequences with links to their entries in the On-Line Encyclopedia of Integer Sequences. OEIS core sequences Index to
List_of_integer_sequences
Relation between sides of a right triangle
root of any positive integer. Each triangle has a side (labeled "1") that is the chosen unit for measurement. In each right triangle, Pythagoras's theorem
Pythagorean_theorem
Rational right triangles cannot have square area
do not exist two integer-sided right triangles in which the two legs of one triangle are the leg and hypotenuse of the other triangle. More abstractly
Fermat's right triangle theorem
Fermat's_right_triangle_theorem
Equation for radii of tangent circles
quadruples of this type are also closely related to Heronian triangles, triangles with integer sides and area. Starting with any four mutually tangent circles
Descartes'_theorem
Shape with the same area and perimeter
Pythagorean triples describing integer-sided right triangles, and there are infinitely many equable right triangles with non-integer sides; however, there are
Equable_shape
Number, approximately 2.41421
^{2}&=-1+2\sum _{n=0}^{\infty }(\sigma -1)^{-n}.\end{aligned}}} For every integer n {\displaystyle n} one has σ n = 2 σ n − 1 + σ n − 2 = σ n − 1 + 3
Silver_ratio
Fractal composed of triangles
can be interpreted as a discrete analogue of the Sierpiński triangle. For objects of integer dimension d {\displaystyle d} , scaling a figure by a factor
Sierpiński_triangle
Number, approximately 1.618
(ed.). "Sequence A169985 (Round phi^n to the nearest integer)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Parker, Matt (2014). Things
Golden_ratio
Curved triangle with constant width
for the Reuleaux triangle than for other curves of constant width. Among all shapes of constant width that avoid all points of an integer lattice, the one
Reuleaux_triangle
Triangle with specific characteristics
A Brahmagupta triangle is a triangle whose side lengths are consecutive positive integers and area is a positive integer. The triangle whose side lengths
Brahmagupta_triangle
Natural number
On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-02-17. Sloane, N. J. A. (ed.). "Sequence A212954 (Triangle read by rows: two color
45_(number)
Overview of and topical guide to geometry
trapezoid Triangle Acute and obtuse triangles Equilateral triangle Euler's line Heron's formula Integer triangle Heronian triangle Isosceles triangle List
Outline_of_geometry
Natural number
)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Sloane, N. J. A. (ed.). "Sequence A001263 (Triangle of Narayana numbers T(n,k) = C(n-1
50_(number)
Natural number
number, as well as the length of the hypotenuse of the smallest integer-sided right triangle, making part of the smallest Pythagorean triple (3, 4, 5). 5
5
Shape with three equal sides
An equilateral triangle may have integer sides with three rational angles as measured in degrees, known for the only acute triangle that is similar to
Equilateral_triangle
Points on a common circle
and all of their side lengths are positive integers. Triangles with this property are called Heronian triangles; cyclic quadrilaterals with this property
Concyclic_points
Natural number
Encyclopedia of Integer Sequences. OEIS Foundation. Sloane, N. J. A. (ed.). "Sequence A094133 (Leyland prime numbers)". The On-Line Encyclopedia of Integer Sequences
17_(number)
Graph whose embedding in a Euclidean space forms a regular tiling
the wazir form a square lattice graph. Lattice path Pick's theorem Integer triangles in a 2D lattice Regular graph Weisstein, Eric W. "Lattice graph".
Lattice_graph
Topics referred to by the same term
group Primitive root of unity; See Root of unity Primitive triangle, an integer triangle whose sides have no common prime factor Primitive (phylogenetics)
Primitive
Natural number
number preceding a cube. As an early prime number in the series of positive integers, the number seven has symbolic associations in religion, mythology, superstition
7
Triangle with at least two sides congruent
For any integer n ≥ 4 {\displaystyle n\geq 4} , any triangle can be triangulated into n {\displaystyle n} isosceles triangles. In a right triangle, the median
Isosceles_triangle
Property of geometry, also used to generalize the notion of "distance" in metric spaces
result gives the triangle inequality. The p-norm is a generalization of taxicab and Euclidean norms, using an arbitrary positive integer exponent, ‖ v ‖
Triangle_inequality
Natural number
(Triangle T(n,k) read by rows, giving number of graphs with n nodes (n >= 1) and k edges (0 <= k <= n(n-1)/2))". The On-Line Encyclopedia of Integer Sequences
400_(number)
Special ordering of numbers on a triangle
A magic triangle is a magic arrangement of the integers from 1 to n in a triangular figure. A magic triangle or perimeter magic triangle is an arrangement
Magic_triangle_(mathematics)
Conjecture in combinatorial number theory
Erdős, and Hanson (1974), the number of integers no larger than x that appear more than twice in Pascal's triangle is O ( x 1 / 2 ) {\displaystyle O(x^{1/2})}
Singmaster's_conjecture
Natural number
divisors (including itself) is also an integer, 54 is an arithmetic number. If the complementary angle of a triangle's corner is 54 degrees, the sine of that
54_(number)
Cuboid whose edges and face diagonals have integer lengths
Euler, is a rectangular cuboid whose edges and face diagonals all have integer lengths. A primitive Euler brick is an Euler brick whose edge lengths are
Euler_brick
Number of subsets of a given size
the positive integers that occur as coefficients in the binomial theorem. Commonly, a binomial coefficient is indexed by a pair of integers n ≥ k ≥ 0 and
Binomial_coefficient
Perpendicular line segment from a triangle's side to opposite vertex
formula for the reciprocal area of a triangle", Mathematical Gazette 89 (November 2005), 494. Voles, Roger, "Integer solutions of a − 2 + b − 2 = d − 2
Altitude_(triangle)
17th-century conjecture proved by Andrew Wiles in 1994
coprime integers u, v with v > u. The geometric interpretation is that a and b are the integer legs of a right triangle and d is the integer altitude
Fermat's_Last_Theorem
Natural number
only prime triangular number, and Carl Friedrich Gauss proved that every integer is the sum of at most three triangular numbers. Three is the only prime
3
Number system extending the rational numbers
integer (possibly negative), and each a i {\displaystyle a_{i}} is an integer such that 0 ≤ a i < p . {\displaystyle 0\leq a_{i}<p.} A p-adic integer
P-adic_number
On sets of points with integer distances
the even multiples of one of the acute angles of an integer-sided right triangle (such as the triangle with side lengths 3, 4, and 5) has this property.
Erdős–Anning_theorem
Natural number
summatory function Φ ( n ) {\displaystyle \Phi (n)} over the first 10 integers, and the smallest number n {\displaystyle n} with exactly 7 solutions for
32_(number)
Algebraic expansion of powers of a binomial
nonnegative integers satisfying k + m = n {\displaystyle k+m=n} and the coefficient a {\displaystyle a} of each term is a specific positive integer depending
Binomial_theorem
divisors of the numbers 1 to 1000. A divisor of an integer n is an integer m, for which n/m is again an integer (which is necessarily also a divisor of n).
Table_of_divisors
Natural number
235 (two hundred [and] thirty-five) is the integer following 234 and preceding 236. Additionally, 235 is: a semiprime a heptagonal number a centered triangular
235_(number)
Natural number
The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Sloane, N. J. A. (ed.). "Sequence A006785 (Number of triangle-free graphs on n vertices)"
1,000,000
Size of a two-dimensional surface
integer sides, integer diagonals, and integer area. Equiareal map Heronian triangle, a triangle with integer sides and integer area. List of triangle
Area
Natural number
A138591 (Sums of two or more consecutive nonnegative integers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-04-20. Sloane
777_(number)
Functions of an angle
functions) are real functions which relate an angle of a right-angled triangle to ratios of two side lengths. They are widely used in all sciences that
Trigonometric_functions
Natural number between 89 and 91
Encyclopedia of Integer Sequences. OEIS Foundation. "Sloane's A008277 :Triangle of Stirling numbers of the second kind". The On-Line Encyclopedia of Integer Sequences
90_(number)
Natural number, composite number
Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-08-03. Sloane, N. J. A. (ed.). "Sequence A238822 (Number of equilateral triangles bounded by
14_(number)
On graph drawing with integer edge lengths
rational distances must grow arbitrarily large. Integer triangle, an integral Fáry embedding of the triangle graph Matchstick graph, a graph that can be drawn
Harborth's_conjecture
Mathematics term
n/2 − 1 of Pascal's triangle. The diagonals next to the edge diagonals contain the positive integers in order, but with each integer stated twice OEIS: A004526
Lozanić's_triangle
Natural number
eighth triangular number or the sum of the first eight non-zero positive integers, which makes 36 the first non-trivial square triangular number. Aside from
36_(number)
Natural number
Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2021-09-24. Sloane, N. J. A. (ed.). "Sequence A006785 (Number of triangle-free graphs on
107_(number)
Natural number
of Integer Sequences. OEIS Foundation. Sloane, N. J. A. (ed.). "Sequence A016064 (Smallest side lengths of almost-equilateral Heronian triangles)". The
700_(number)
Prime number congruent to 1 mod 4
{\displaystyle {\sqrt {p}}} is the length of the hypotenuse of a right triangle with integer legs, and they are also the prime numbers p {\displaystyle p} for
Pythagorean_prime
Polynomial sequence
A. (ed.). "Sequence A060187 (Triangle read by rows: Eulerian numbers of type B)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Schoenberg
Eulerian_number
Number that is not a ratio of integers
reasoning is as follows: Start with an isosceles right triangle with side lengths of integers a, b, and c (a = b since it is isosceles). The ratio of
Irrational_number
Natural number
numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Sloane, N. J. A. (ed.). "Sequence A331452 (Triangle read by rows: T(n,m) (n >= m >=
600_(number)
Equation of the form 1/a + 1/b = 1/c
or not the numbers are integers; there is a formula (see here) that generates all integer cases. Second, also in a right triangle the sum of the squared
Optic_equation
Algebraic construction
of integers of a non-archimedean local field F as the set of all elements of F with absolute value ≤ 1; this is a ring because of the strong triangle inequality
Ring_of_integers
holds whether or not the numbers are integers; there is a formula (see here) that generates all integer cases. A triangle not necessarily in the Euclidean
List_of_sums_of_reciprocals
Natural number
primitive Heronian tetrahedron with 4 congruent triangle faces.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2024-03-09
888_(number)
Sloane, N. J. A. (ed.), "Sequence A008284 (Triangle of partition numbers)", The On-Line Encyclopedia of Integer Sequences, OEIS Foundation Arndt, Jörg (2011)
Triangle_of_partition_numbers
Natural number
arithmetic number. 69 is a congruent number—a positive integer that is the area of a right triangle with three rational number sides—and an amenable number
69_(number)
Number whose square is a given number
roots of positive integers that are not perfect squares are always irrational numbers: numbers not expressible as a ratio of two integers (that is, they
Square_root
Natural number
unlabeled nodes. If an equilateral triangle has sides of length 112, then it contains an interior point at integer distances 57, 65, and 73 from its vertices
112_(number)
Natural number
Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-05-11. Sloane, N. J. A. (ed.). "Sequence A111808 (Left half of trinomial triangle (A027907)
800_(number)
Point in a triangle that can be seen as its middle under some criteria
{\displaystyle f(a,b,c)=1} otherwise. Then for any triangle with integer sides the associated triangle center evaluates to 0:0:0 which is undefined. In
Triangle_center
Numbers arranged in a triangle
triangle, which counts permutations with a given number of ascents Floyd's triangle, whose entries are all of the integers in order Hosoya's triangle
Triangular_array
Mathematical proof technique using contradiction
right triangle with legs y z {\displaystyle {\sqrt {yz}}} and b 2 {\displaystyle b^{2}} and hypotenuse a 2 {\displaystyle a^{2}} also would have integer sides
Proof_by_infinite_descent
Natural number
"Sequence A001359 (Lesser of twin primes.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-01-22. Weisstein, Eric W. "Brocard's
11_(number)
Natural number
it is possible to make a right triangle with rationally numbered side lengths whose area is 666. The number of integers which are relatively prime to 666
666_(number)
Similar triangles that share two side lengths
exercises about triangles. There are infinitely many pairs of 5-Con triangles, even up to scaling. The smallest 5-Con triangles with integer sides have side
5-Con_triangles
Natural number
Diophantine problem as the largest known integer of the sequence 1, 3, 8, 120. Fermat wanted to find another positive integer that, when multiplied by any of the
120_(number)
Natural number
(Conjecturally largest even integer which is an unordered sum of two primes in exactly n ways)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation
68_(number)
Relation between the side lengths and altitude of a right triangle
is as follows: Let A, B be the endpoints of the hypotenuse of a right triangle △ABC. Let D be the foot of a perpendicular dropped from C, the vertex of
Inverse_Pythagorean_theorem
Natural number
4,294,967,295 is the highest unsigned (that is, not negative) 32-bit integer, which makes it the highest possible number a 32-bit system can store in
4,294,967,295
File format for 3D printing and scanning
little-endian unsigned integer indicating the number of triangular facets in the file. Following that is data describing each triangle in turn. The file simply
STL_(file_format)
Polynomial equation whose integer solutions are sought
a Diophantine equation is a polynomial equation with integer coefficients, for which only integer solutions are of interest. A linear Diophantine equation
Diophantine_equation
Type of complex number
a number that is a root of a non-zero polynomial in one variable with integer (or, equivalently, rational) coefficients. For example, the golden ratio
Algebraic_number
Result of multiplying four instances of a number together
fourth power is always 1. Every positive integer can be expressed as the sum of at most 19 fourth powers; every integer larger than 13792 can be expressed as
Fourth_power
Natural number
triangular numbers together. This sequence, dubbed 'Triple Triangle-Pair Numbers' is the sequence of integers: 276, 406, 666, ... 276 is the size of the largest
276_(number)
Right triangle related to the golden ratio
be adequately explained using integer ratios, based on a right triangle with sides 11 and 14. The name "Kepler triangle" for this shape was used by Roger
Kepler_triangle
Natural number
(ed.). "Sequence A006785 (Number of triangle-free graphs on n vertices)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Sloane, N
100,000
Natural number
having 3+3n vertices of a triangle with each side subdivided by n additional points)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation
229_(number)
Natural number
(ed.). "Sequence A006785 (Number of triangle-free graphs on n vertices)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Sloane, N
10,000
Visualization of the prime numbers formed by arranging the integers into a spiral
American a short time later. It is constructed by writing the positive integers in a square spiral and specially marking the prime numbers. Ulam and Gardner
Ulam_spiral
Natural number
Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-12-09. Sloane, N. J. A. (ed.). "Sequence A005418 (...row sums of Losanitsch's triangle.)". The
72_(number)
INTEGER TRIANGLE
INTEGER TRIANGLE
Boy/Male
Arabic, Muslim
To Wait
Boy/Male
German, Norse, Swedish
Guarded by Ing; Ing's Beauty
Boy/Male
Norse
Son's army.
Boy/Male
American, Anglo, Australian, British, English
From the Triangle Shaped Settlement; Lives in the Triangular Farm Stead
Female
Swedish
Swedish contracted form of Scandinavian Ingegerd, INGER means "Ing's enclosure."
Female
Scandinavian
Scandinavian form of Old Norse Ingigerðr, INGEGERD means "Ing's enclosure."
Girl/Female
Scandinavian Teutonic Danish Swedish
Ing's abundance. Feminine of Ing who was Norse mythological god of the earth's fertility.
Girl/Female
Danish, Finnish, German, Swedish
Guarded by Ing; Ing's Beauty; Ing's Place
Girl/Female
American, Australian, Danish, Finnish, German, Scandinavian, Swedish, Teutonic
Guarded by Ing; Ing is Beautiful; Daughter of Hero; Enclosure
Boy/Male
Muslim
To wait
INTEGER TRIANGLE
INTEGER TRIANGLE
Girl/Female
Indian
Lord Vishnu
Girl/Female
Hindu, Indian, Marathi
Food Goddess
Male
Italian
Italian form of Latin Angelicus, ANGELICO means "angelic."
Boy/Male
Hindu, Indian
Lord Krishna Warriors from the Mahabharata
Boy/Male
Tamil
Dipjyoti | தீபà¯à®œà¯à®¯à¯‹à®¤à¯€
Light of lamp
Boy/Male
Muslim
Blood, Old Arabic name
Boy/Male
Indian
Pillar, Post, Support
Girl/Female
Arabic, Australian, Farsi, German, Indian, Iranian, Turkish
Lovable; Happiness; Heaven Tree which Gave Everything; Pure and Blessedness
Boy/Male
Hindu
One with few desires
Boy/Male
Indian, Sindhi
Greek God
INTEGER TRIANGLE
INTEGER TRIANGLE
INTEGER TRIANGLE
INTEGER TRIANGLE
INTEGER TRIANGLE
n.
One who gathers the vintage.
v. t.
To deposit, as a dead body, in the earth; to bury; to inter.
v. t.
To inhume; to bury; to inter.
v. t.
To bury; to inter; to entomb; as, obscurely sepulchered.
v. t.
To deposit and cover in the earth; to bury; to inhume; as, to inter a dead body.
v. t.
To inter again.
v. t.
To deposit or inter in a chapel; to enshrine.
n.
That number placed below the line in vulgar fractions which shows into how many parts the integer or unit is divided.
a.
Essential to completeness; constituent, as a part; pertaining to, or serving to form, an integer; integrant.
p. pr. & vb. n.
of Inter
v. t.
To inter with funeral rites; to bury.
v. t.
To place in a tomb; to bury; to inter; to entomb.
n.
One who makes an index.
n.
A complete entity; a whole number, in contradistinction to a fraction or a mixed number.
n.
One who intends.
imp. & p. p.
of Inter
v. t.
To inter.
n.
One who makes an entrance or beginning.
n.
One who inters.