Complementary Angles in Geometry

This video tutorial explains complementary angles, which are two angles that add up to 90 degrees. It highlights that complementary angles do not need to be adjacent and can be found in right angles and right triangles. The video provides examples and explains that in a right triangle, the two non-right angles are complementary because the sum of angles in a triangle is 180 degrees.

What is the sum of two complementary angles?

• 360 degrees

• 180 degrees

• 90 degrees

• 45 degrees

How many angles are involved in forming complementary angles?

• Four

• One

• Three

• Two

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

• 90 degrees

• 60 degrees

• 45 degrees

• 30 degrees

Do complementary angles need to be adjacent?

• Sometimes

• No

• Yes

• Only in triangles

What term is used to describe two angles that are complementary to each other?

• Adjacents

• Complements

• Opposites

• Supplements

Where is one common place you can find complementary angles?

• In a pentagon

• In a circle

• In a right angle

• In a square

What happens when a right angle is divided into two angles?

• They become equal

• They become obtuse

• They become complementary

• They become supplementary

In a right triangle, what is the sum of the two non-right angles?

• 45 degrees

• 90 degrees

• 180 degrees

• 360 degrees

If a triangle has one right angle, what can be said about the other two angles?

• They are equal

• They are complementary

• They are supplementary

• They are obtuse

What is the total sum of angles in any triangle?

• 360 degrees

• 180 degrees

• 90 degrees

• 270 degrees