Quiz on Complementary and Supplementary Angles

What is the sum of two right angles?

• 180 degrees

• 360 degrees

• 90 degrees

• 270 degrees

If two angles add up to 90 degrees, what are they called?

• Complementary

• Vertical

• Supplementary

• Adjacent

Which of the following pairs of angles are complementary?

• 45° and 135°

• 85° and 95°

• 120° and 60°

• 60° and 30°

If angle A is 75° and angle B is 15°, what is their relationship?

• Neither

• Complementary

• Equal

• Supplementary

What is the value of x if 2x + 28 = 90?

• 34

• 31

• 32

• 33

In a supplementary angle relationship, if one angle is 123°, what is the other angle?

• 77°

• 57°

• 87°

• 67°

If two angles on a straight line are 10x and 80°, what is the value of x?

• 9

• 8

• 10

• 11

What is the measure of an angle if it forms a supplementary pair with a 116° angle?

• 64°

• 74°

• 84°

• 94°

Which of the following is true for supplementary angles?

• They are always equal

• They are always adjacent

• They add up to 180°

• They add up to 90°

If x + x = 90, what is the value of x?

• 30

• 40

• 45

• 50