Angle Relationship Vocab

Front

Angles that are congruent and sit opposite each other (Hint: opposite vertexes).

Back

Vertical Angles

Front

Angles sharing a side or segment.

Back

Adjacent Angles

Front

Angles in the same position on different parallel lines, always congruent.

Back

Corresponding Angles

Front

Angles outside parallel lines on opposite sides of the transversal, always congruent.

Back

Alternate Exterior Angles

Front

Angles inside parallel lines on opposite sides of the transversal, always congruent.

Back

Alternate Interior Angles

Front

A line intersecting two or more parallel lines is a _________________

Back

Transversal

Front

Two angles whose sum is 180° is called ________

Back

Supplementary angles

Front

Two angles whose sum is 90° is called ___________

Back

Complementary Angles

Front

Example of two supplementary angles:

Back

90° and 90°

Front

Two complementary angles could measure...

Back

40° and 50°