(Q20524281)

English

isosceles right triangle

triangle in which one angle is a 90-degree angle and two sides are congruent

45-45-90 triangle
90-45-45 triangle

In more languages

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Statements

subclass of

non-equilateral isosceles triangle

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right triangle

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image

Isosceles-right-triangle.svg
351 × 351; 626 bytes

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has characteristic

area

defining formula

{\frac {a^{2}}{2}}

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perimeter

defining formula

a\left(2+{\sqrt {2}}\right)

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inradius

defining formula

r={\frac {2-{\sqrt {2}}}{2}}a

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circumradius

defining formula

R={\frac {a}{\sqrt {2}}}

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maintained by WikiProject

WikiProject Mathematics

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has part(s)

side

defining formula

a,a{\sqrt {2}}

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right angle

quantity

1

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45° angle

quantity

2

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Commons category

Isosceles right triangles

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Identifiers

Google Knowledge Graph ID

/g/120mh_2s

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MathWorld ID

IsoscelesRightTriangle

1 reference

imported from Wikimedia project

Slovene Wikipedia

Pixiv Encyclopedia ID

直角二等辺三角形

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Sitelinks

Wikipedia(10 entries)

cvwiki Танаяклă тата тӳрĕ кĕтеслĕ виçкĕтеслĕх
enwiki Isosceles right triangle
frwiki Triangle isocèle rectangle
hywiki Հավասարասրուն ուղղանկյուն եռանկյուն
jawiki 直角二等辺三角形
kowiki 직각 이등변 삼각형
ruwiki Равнобедренный прямоугольный треугольник
slwiki Enakokraki pravokotni trikotnik
ukwiki Рівнобедрений прямокутний трикутник
zhwiki 等腰直角三角形

(Q20524281)

isosceles right triangle

Statements

Identifiers

Sitelinks

Wikipedia(10 entries)

Wikibooks(0 entries)

Wikinews(0 entries)

Wikiquote(0 entries)

Wikisource(0 entries)

Wikiversity(0 entries)

Wikivoyage(0 entries)

Wiktionary(0 entries)

Multilingual sites(1 entry)