Angle Pairs

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What does it mean for angles to be congruent?

Back

Angles that have the same measure.

Front

What are adjacent angles?

Back

Two angles that share a common side and vertex.

Front

If angle A is 30 degrees, what is the measure of its complementary angle?

Back

60 degrees.

Front

If angle B is 120 degrees, what is the measure of its supplementary angle?

Back

60 degrees.

Front

What is the sum of the measures of angles in a triangle?

Back

180 degrees.

Front

If two angles are complementary, and one angle measures 40 degrees, what is the measure of the other angle?

Back

50 degrees.

Front

If angle C is 45 degrees, what are the measures of angles that are congruent to angle C?

Back

45 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent.