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.
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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. When drawing diagrams, we denote right angles with a little square:
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<asy>
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unitsize(2cm);
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pair A, B, C, D, I;
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A = (1, 0);
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B = (-1, 0);
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C = (0, 1);
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D = (0, -1);
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I = (0, 0);
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draw(A--B, Arrows);
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draw(C--D, Arrows);
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draw(rightanglemark(C, I, A, 5));
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</asy>
  
 
==See Also==
 
==See Also==
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** [[Obtuse angle]]
 
** [[Obtuse angle]]
 
** [[Straight angle]]
 
** [[Straight angle]]
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** [[Reflex angle]]
  
 
{{stub}}
 
{{stub}}
  
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[[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 $\frac \pi 2$ 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]

See Also

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