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Introduction to Angles
Basic terms related to the classification of angles.
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Right Angle
An angle that measures exactly 90 degrees
Straight Angle
An angle that measures exactly 180 degrees
Acute Angle
An angle that measures less than 90 degrees
Obtuse Angle
An angle that measures between 90 and 180 degrees
Congruent Angles
Two angles that have the same measure
Vertex
The endpoint where two rays meet, forming an angle
Bisect
To separate an angle into two congruent angles
Degrees
The unit that angles are measured by
