Understanding and Using Angle Relationships

Two angles that add up to 90° are called:

• Supplementary angles

• Vertical angles

• Complementary angles

• Adjacent angles

Vertical angles are:

• Always congruent (equal)

• Always supplementary

• Always complementary

• Always adjacent

If one angle measures 35°, what is the measure of its complement?

• 55°

• 145°

• 65°

• 125°

Two angles that add up to 180° are called:

• Complementary angles

• Supplementary angles

• Vertical angles

• Right angles

If one angle in a supplementary pair measures 110°, what does the other angle measure?

• 40°

• 50°

• 60°

• 70°

If angles X and Y are vertical angles, and angle X measures 75°, what is the measure of angle Y?

• 15°

• 75°

• 105°

• 285°

According to the Linear Pair Theorem, two adjacent angles that form a straight line are always:

• Supplementary angles

• Vertical angles

• Complementary angles

• Acute angles

When 2 lines intersect to form 4 angles, the angles that are opposite each other and do not share a side are called:

• Adjacent angles

• Complementary angles

• Vertical angles

• Linear pair

If two lines intersect, how many pairs of vertical angles are formed?

• 1 pair

• 2 pairs

• 3 pairs

• 4 pairs

If angle A and angle B are complementary, and angle A measures 28°, what is the measure of angle B?

• 200°

• 172°

• 72°

• 62°