Right angle: Difference between revisions
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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== | ||
* [[Geometry]] | * [[Geometry]] | ||
* [[Right triangle]] | * [[Right triangle]] | ||
* [[Acute angle]] | * [[Angle]] | ||
* [[Obtuse angle]] | ** [[Acute angle]] | ||
* [[Straight angle]] | ** [[Obtuse angle]] | ||
** [[Straight angle]] | |||
** [[Reflex angle]] | |||
{{stub}} | {{stub}} | ||
[[Category:Definition]] | |||
[[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:
![[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]](http://latex.artofproblemsolving.com/9/9/1/991a66b234c3f63b1f9af7a3a50587d604540e7f.png)
See Also
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