Supplementary angles
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Supplementary angles are pairs of angles whose measures add up to 180 degrees. If the two supplementary angles are adjacent (i.e. have a common vertex and share just one side), their non-shared sides form a line. The supplement of an angle of 135 degrees is an angle of 45 degrees. The supplement of an angle of x degrees is an angle of 180 − x degrees.It also does not have to be on the same line.
[edit] See also
[edit] External links
- Animated demonstration - Interactive applet and explanation of the characteristics of supplementary angles.
- Angle definition pages with interactive applets that are also useful in a classroom setting. Math Open Reference
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