Complementary and Supplementary Angles

This video tutorial covers the concept of adjacent angles, how to estimate angle measurements, and the difference between complementary and supplementary angles. It includes a hands-on activity involving cutting rectangles to explore angle measurements and concludes with practice problems and homework to reinforce the concepts learned.

What is the measure of a right angle?

• 180°

• 90°

• 60°

• 45°

If an angle is less than 90° but more than 60°, what could be its measure?

• 120°

• 95°

• 85°

• 50°

What is the sum of angles in a straight line?

• 360°

• 270°

• 180°

• 90°

What do you call two angles that add up to 90°?

• Supplementary

• Complementary

• Adjacent

• Vertical

If one angle measures 70° and is part of a straight line, what is the measure of the other angle?

• 90°

• 180°

• 70°

• 110°

How can you find the measure of an unknown angle in a complementary pair if one angle is 30°?

• Add 30°

• Subtract 30° from 90°

• Multiply by 2

• Divide by 2

What is the measure of angle C if angle A is 74° and they are supplementary?

• 74°

• 106°

• 180°

• 90°

Which of the following pairs of angles are complementary?

• 30° and 60°

• 60° and 120°

• 90° and 90°

• 45° and 45°

If angle BAC is a right angle, what is the measure of angle CAD if angle BAC is 64°?

• 180°

• 64°

• 26°

• 90°

What is the measure of angle SO if angle RS is 76° and they are supplementary?

• 180°

• 90°

• 76°

• 104°