Geometry Vocab Course 3

Front

Angle

Back

Formed by two rays, or sides, with a common endpoint.

Front

Right Angle

Back

Has a measure of 90°.

Front

Acute Angle

Back

Has a measure greater than 0° and less than 90°.

Front

Obtuse Angle

Back

Has a measure greater than 90° and less than 180°.

Front

Straight Angle

Back

Has a measure of 180°.

Front

Complementary Angles

Back

Two angles whose measures add to 90°.

Front

Supplementary Angles

Back

Two angles whose measures add to 180°.

Front

Adjacent Angles

Back

Have a common vertex and common side, but no common interior points. Side by side angles!

Front

Vertical Angles

Back

The nonadjacent angles formed by two intersecting lines. Vertical angles are congruent.

Front

Congruent Angles

Back

Angles that have the same measure.