2.1 Vocabulary - Angle Pairs

Front

Complementary Angles

Back

2 angles that add up to 90 degrees.

Front

Supplementary Angles

Back

2 angles that add up to 180 degrees

Front

Vertical Angles

Back

A pair of nonadjacent opposite angles formed by two intersecting lines; vertical angles are congruent.

Front

Adjacent Angles

Back

A pair of angles that are next to each other. They share a common vertex and a common side, and they do not overlap.

Front

Linear Pair

Back

A pair of angles that are supplementary and adjacent. A linear pair will add up to 180 degrees.

Front

Linear Pair Postulate

Back

If two angles form a linear pair, then they are supplementary (equal to 180 degrees).