3 - (Review: Circles) Complementary & Supplementary Angles

What are angles called that add up to form a right angle?

• Complementary angles

• Adjacent angles

• Obtuse angles

• Supplementary angles

If a right angle is divided into two smaller angles, what is the sum of these angles?

• 180 degrees

• 90 degrees

• 45 degrees

• 360 degrees

Which statement is true about complementary angles?

• They are always equal

• They sum up to 90 degrees

• Each angle is less than 90 degrees

• They sum up to 180 degrees

What happens when a third ray divides a right angle?

• Forms two complementary angles

• Decreases the angle size to less than 45 degrees

• Forms two supplementary angles

• None of the above

What do we call two angles that together form a straight angle?

• Right angles

• Supplementary angles

• Acute angles

• Complementary angles

When a straight angle is divided, what is the total of the two resulting angles?

• 360 degrees

• 180 degrees

• 270 degrees

• 90 degrees

Which of the following is not a characteristic of supplementary angles?

• They add up to 90 degrees

• They can be more than 90 degrees each

• They add up to 180 degrees

• They form a straight line when added

If two angles are called supplementary, what must be true?

• They add up to 360 degrees

• They are each 90 degrees

• They are less than 90 degrees each

• They add up to 180 degrees