Angle Relationships

What are complementary angles?

• Two angles that are equal in measure

• Two angles that add up to 180 degrees

• Two angles that are adjacent to each other

• Two angles that add up to 90 degrees

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

• 60 degrees

• 120 degrees

• 45 degrees

• 90 degrees

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

• 45

• 180

• 90

• 30

What is the sum of the measures of complementary angles?

• 180 degrees

• 45 degrees

• 90 degrees

• 360 degrees

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

• 120 degrees

• 60 degrees

• 180 degrees

• 90 degrees

If two angles are vertical and one angle measures 60 degrees, what is the measure of the other angle?

• 90 degrees

• 30 degrees

• 60 degrees

• 120 degrees

What is the relationship between the measures of vertical angles?

• Congruent

• Adjacent

• Perpendicular

• Parallel

If two angles are complementary and one angle measures 70 degrees, what is the measure of the other angle?

• 90 degrees

• 20 degrees

• 50 degrees

• 120 degrees

If two angles are vertical and one angle measures 80 degrees, what is the measure of the other angle?

• 100 degrees

• 90 degrees

• 60 degrees

• 80 degrees