Angles Worksheet

What are complementary angles?

• Two angles whose sum is 90 degrees.

• Two angles whose sum is 180 degrees.

• Two angles whose sum is 45 degrees.

• Two angles whose sum is 270 degrees.

If one angle is 30 degrees, what is the measure of its complementary angle?

• 60

• 120

• 90

• 45

What are supplementary angles?

• Two angles that add up to 90 degrees.

• Two angles that add up to 180 degrees.

• Two angles that add up to 360 degrees.

• Two angles that add up to 45 degrees.

If one angle is 120 degrees, what is the measure of its supplementary angle?

• 60

• 90

• 30

• 120

Find the value of x in the given figure, where angle A and angle B are complementary angles. Angle A = 40 degrees. Angle B = x degrees.

• 30

• 60

• 70

• 50

Find the value of x in the given figure, where angle P and angle Q are supplementary angles. Angle P = 130 degrees. Angle Q = x degrees.

• 120

• 50

• 80

• 100

If two angles are complementary and one angle measures 45 degrees, what is the measure of the other angle?

• 30

• 90

• 45

• 60

If two angles are supplementary and one angle measures 150 degrees, what is the measure of the other angle?

• 90

• 60

• 30

• 120

In a right triangle, if one acute angle measures 30 degrees, what is the measure of the other acute angle?

• 90 degrees

• 45 degrees

• 60 degrees

• 120 degrees

In a right triangle, if one acute angle measures 60 degrees, what is the measure of the other acute angle?

• 120

• 90

• 30

• 45