Angles: + Review

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

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

Back

65°.

Front

If two angles are supplementary and one angle measures 130°, what is the measure of the other angle?

Back

50°.

Front

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

Back

180°.

Front

If m∠1 = 30°, what is m∠2 if m∠1 and m∠2 are complementary?

Back

60°.

Front

If m∠3 = 90°, what type of angle is m∠3?

Back

Right angle.

Front

What is the value of x if m∠1 + m∠2 = 90° and m∠1 = 40°?

Back

50°.

Front

What is the value of x if m∠1 + m∠2 = 180° and m∠1 = 130°?

Back

50°.

Front

What do you call angles that are opposite each other when two lines intersect?

Back

Vertical angles.