Complementary and Supplementary Angles

This video tutorial by Mrs. Zia covers solving for unknown angles using equations. It includes exercises on complementary and supplementary angles, vertical angles, and angles on a line. The lesson emphasizes identifying angle relationships, setting up equations, and solving for unknown values. Students learn to use tape diagrams and verify solutions with a protractor.

What is the sum of complementary angles?

• 45°

• 360°

• 180°

• 90°

If one angle is four times the other and they are complementary, what is the measure of the smaller angle?

• 18°

• 22.5°

• 36°

• 45°

What is the property of vertical angles?

• They are equal to 180°

• They are congruent

• They are supplementary

• They are complementary

In a diagram, if two angles are vertical and one measures 60°, what is the measure of the other angle?

• 120°

• 60°

• 90°

• 180°

What is the sum of supplementary angles?

• 45°

• 360°

• 180°

• 90°

If an angle is 2/3 of its supplement, what is the measure of the angle?

• 72°

• 108°

• 60°

• 90°

In a diagram where three lines meet at a point, what is the sum of the angles around the point?

• 90°

• 180°

• 270°

• 360°

If angle B and angle C are vertical angles and angle B measures 100°, what is the measure of angle C?

• 80°

• 140°

• 100°

• 120°

What is the measure of an angle if it is 1/4 of its complement?

• 18°

• 22.5°

• 36°

• 45°

If three angles on a line add up to 180°, and two of them are 90° and 36°, what is the measure of the third angle?

• 54°

• 74°

• 64°

• 44°