Difference between revisions of "Right angle"
(Example of a right angle) |
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− | A '''right angle''' is the [[angle]] formed by two [[perpendicular]] [[line]]s. The [[measure of an angle | measure]] of every right angle is 90 [[degree (geometry) | degrees]] or <math>\frac \pi 2</math> [[radian]]s. | + | A '''right angle''' is the [[angle]] formed by two [[perpendicular]] [[line]]s. The [[measure of an angle | measure]] of every right angle is 90 [[degree (geometry) | degrees]] or <math>\frac \pi 2</math> [[radian]]s. When drawing diagrams, we denote right angles with a little square: |
+ | |||
+ | <asy> | ||
+ | unitsize(2cm); | ||
+ | pair A, B, C, D, I; | ||
+ | |||
+ | A = (1, 0); | ||
+ | B = (-1, 0); | ||
+ | C = (0, 1); | ||
+ | D = (0, -1); | ||
+ | I = (0, 0); | ||
+ | |||
+ | draw(A--B, Arrows); | ||
+ | draw(C--D, Arrows); | ||
+ | draw(rightanglemark(C, I, A, 5)); | ||
+ | </asy> | ||
==See Also== | ==See Also== | ||
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** [[Obtuse angle]] | ** [[Obtuse angle]] | ||
** [[Straight angle]] | ** [[Straight angle]] | ||
+ | ** [[Reflex angle]] | ||
{{stub}} | {{stub}} | ||
+ | [[Category:Definition]] | ||
[[Category:Geometry]] | [[Category:Geometry]] |
Latest revision as of 22:59, 11 June 2022
A right angle is the angle formed by two perpendicular lines. The measure of every right angle is 90 degrees or radians. When drawing diagrams, we denote right angles with a little square:
See Also
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