CA5 Angle Basics (8.MG.1)

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

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

Back

60°

Front

What is the definition of supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If m∠B = 120°, what is the measure of its supplementary angle?

Back

60°

Front

What is an adjacent angle?

Back

Adjacent angles are two angles that share a common side and a common vertex.

Front

If m∠1 = 41°, what is the measure of the adjacent angle if they are complementary?

Back

49°

Front

If m∠2 = 57°, what is the measure of m∠1 if they are supplementary?

Back

123°

Front

What is the relationship between two angles that are complementary?

Back

Their measures add up to 90 degrees.

Front

What is the relationship between two angles that are supplementary?

Back

Their measures add up to 180 degrees.

Front

If two angles are complementary and one angle measures 25°, what is the measure of the other angle?

Back

65°