Complementary and Supplementary Angles

Mr. J explains complementary and supplementary angles, providing examples for each. Complementary angles add up to 90 degrees, while supplementary angles add up to 180 degrees. The video includes strategies for finding missing angles and tips for remembering the difference between complementary and supplementary angles.

What is the sum of complementary angles?

• 180 degrees

• 90 degrees

• 45 degrees

• 360 degrees

If one angle is 70 degrees, what is the measure of its complementary angle?

• 70 degrees

• 90 degrees

• 110 degrees

• 20 degrees

If two angles are complementary and one is 30 degrees, what is the other angle?

• 90 degrees

• 150 degrees

• 60 degrees

• 30 degrees

What is the missing angle if one complementary angle is 48 degrees?

• 132 degrees

• 90 degrees

• 42 degrees

• 48 degrees

What is the sum of supplementary angles?

• 45 degrees

• 360 degrees

• 180 degrees

• 90 degrees

If one angle is 65 degrees, what is the measure of its supplementary angle?

• 65 degrees

• 115 degrees

• 90 degrees

• 180 degrees

What is the missing angle if one supplementary angle is 128 degrees?

• 90 degrees

• 180 degrees

• 128 degrees

• 52 degrees

Which letter in the alphabet helps remember that complementary angles add up to 90 degrees?

• S

• C

• B

• A

Which letter in the alphabet helps remember that supplementary angles add up to 180 degrees?

• B

• C

• S

• A

If two angles are supplementary and one is 120 degrees, what is the other angle?

• 120 degrees

• 180 degrees

• 90 degrees

• 60 degrees