Complementary and Supplementary Angles

The video tutorial explains the concepts of complementary and supplementary angles. Complementary angles are two angles that add up to 90 degrees, while supplementary angles add up to 180 degrees. The video provides examples and applications of these concepts, such as in right triangles and straight lines. It concludes with a summary of the rules for identifying complementary and supplementary angles.

What is the complement of a 30-degree angle?

• 45 degrees

• 90 degrees

• 120 degrees

• 60 degrees

In a right triangle, if one acute angle is 68 degrees, what is the measure of the other acute angle?

• 22 degrees

• 68 degrees

• 90 degrees

• 112 degrees

What is the definition of supplementary angles?

• Two angles that add to 180 degrees

• Two angles that are equal

• Two angles that are complementary

• Two angles that add to 90 degrees

If an angle measures 105 degrees, what is its supplementary angle?

• 105 degrees

• 95 degrees

• 85 degrees

• 75 degrees

On a straight line, if one angle is 65 degrees, what is the measure of the other angle?

• 180 degrees

• 115 degrees

• 65 degrees

• 90 degrees

Which of the following pairs of angles are complementary?

• 40 and 50 degrees

• 90 and 90 degrees

• 105 and 75 degrees

• 60 and 120 degrees

Which of the following pairs of angles are supplementary?

• 60 and 120 degrees

• 40 and 50 degrees

• 30 and 60 degrees

• 90 and 90 degrees

What is the sum of two supplementary angles?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees