Understanding Complementary and Supplementary Angles

The video tutorial explains the concepts of complementary and supplementary angles. Complementary angles are two angles whose measures add up to 90 degrees, forming a right angle. The tutorial demonstrates how to express the measure of one angle's complement in terms of a variable. Similarly, supplementary angles are two angles whose measures sum to 180 degrees, forming a straight angle. The video also shows how to express the measure of one angle's supplement in terms of a variable. Examples are provided to illustrate these concepts.

What is the sum of two complementary angles?

• 360 degrees

• 45 degrees

• 90 degrees

• 180 degrees

Which of the following is true for complementary angles?

• They form a straight line.

• Their sum is 360 degrees.

• Their sum is 180 degrees.

• They form a right angle.

If one angle is x degrees, what is the measure of its complement?

• x - 90 degrees

• 180 - x degrees

• 90 - x degrees

• x + 90 degrees

If an angle measures 40 degrees, what is the measure of its complement?

• 50 degrees

• 60 degrees

• 70 degrees

• 80 degrees

If an angle measures 30 degrees, what is the measure of its complement?

• 90 degrees

• 80 degrees

• 70 degrees

• 60 degrees

What is the sum of two supplementary angles?

• 270 degrees

• 180 degrees

• 90 degrees

• 360 degrees

Which of the following is true for supplementary angles?

• Their sum is 360 degrees.

• Their sum is 90 degrees.

• They form a straight line.

• They form a right angle.

If one angle is z degrees, what is the measure of its supplement?

• z - 180 degrees

• 90 - z degrees

• 180 - z degrees

• z + 180 degrees

If an angle measures 50 degrees, what is the measure of its supplement?

• 140 degrees

• 100 degrees

• 120 degrees

• 130 degrees