Identifying Angles

Front

What are supplementary angles?

Back

Two angles that add up to 180°.

Front

What are complementary angles?

Back

Two angles that add up to 90°.

Front

What is the measure of the angle that is supplementary to a 110° angle?

Back

70°

Front

If two angles are complementary and one measures 35°, what is the measure of the other angle?

Back

55°

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are equal.

Front

What are adjacent angles?

Back

Angles that share a common side and vertex but do not overlap.

Front

If angle A is 60°, what is the measure of its supplementary angle?

Back

120°

Front

If angle B is 45°, what is the measure of its complementary angle?

Back

45°.

Front

What is the sum of the measures of two supplementary angles?

Back

180°.

Front

What is the sum of the measures of two complementary angles?

Back

90°.