Angle Pairs

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

What is an adjacent angle?

Back

Angles that share a common side and vertex.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

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

Back

60°.

Front

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

Back

135°.

Front

Solve for x: 2x + 10 = 50

Back

x = 20.

Front

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

Back

65°.

Front

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

Back

180°.

Front

If angle C is 90°, what type of angle is it?

Back

It is a right angle.