Angle Relationships

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

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

Back

60°

Front

If angle A is 110°, what is the measure of its supplementary angle?

Back

70°

Front

What is the measure of a right angle?

Back

90°

Front

If two angles are vertical angles, what can be said about their measures?

Back

They are equal.

Front

What is the sum of the angles in a triangle?

Back

180°.

Front

If angle A is 45°, what is the measure of angle B if they are complementary?

Back

45°.

Front

If angle A is 150°, what is the measure of angle B if they are supplementary?

Back

30°.

Front

What is the definition of a right angle?

Back

An angle that measures exactly 90 degrees.