Angles
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Common Angles
Acute
Obtuse
Right
Reflex
Revolution
Others
Naming Angles
Complementary and Supplementary
Angles At A Point
Alternate
Using a Protractor
Corresponding
Co-interior
Vertically Opposite Angles
Bibliography
Right angle
An angle which is equal to 90°, is a right angle.
A right angle is one quarter of a full revolution.
Right angles are the most common angles. They can be found almost anywhere.