Angle Vocabulary Review

Front

What are angles whose sum equals 90°?

Back

Complementary angles are two angles that add up to 90°.

Front

What are angles that are on the inside of parallel lines and on opposite sides of the transversal?

Back

Alternate Interior Angles are formed when a transversal crosses two parallel lines.

Front

What are angles in the same relative position at each intersection or have 'matching' corners?

Back

Corresponding angles are angles that occupy the same relative position at each intersection.

Front

What do you call angles that add up to 180°?

Back

Supplementary angles are two angles whose sum is 180°.

Front

What are angles that are adjacent and add up to 180°?

Back

Adjacent Supplementary Angles are two angles that share a common side and vertex and add up to 180°.

Front

What are angles that are opposite each other when two lines cross?

Back

Vertical angles are the angles opposite each other when two lines intersect.

Front

What is the term for angles that are on the same side of the transversal and inside the parallel lines?

Back

Same Side Interior Angles are on the same side of the transversal and between the two lines.

Front

What is the relationship between complementary angles?

Back

If two angles are complementary, their measures add up to 90°.

Front

What is the relationship between supplementary angles?

Back

If two angles are supplementary, their measures add up to 180°.

Front

How do you identify corresponding angles?

Back

Corresponding angles are found in matching corners when a transversal crosses two lines.