Exploring Complementary and Supplementary Angles

The video tutorial covers complementary and supplementary angles. Complementary angles are two angles whose sum is 90 degrees, while supplementary angles sum to 180 degrees. The tutorial explains how to find unknown angles in both types of angle pairs using subtraction. It includes examples and practice problems to reinforce the concepts.

What is the sum of complementary angles?

• 45 degrees

• 90 degrees

• 360 degrees

• 180 degrees

How do you find the missing angle if you know one angle in a pair of complementary angles?

• Subtract the known angle from 180

• Multiply the known angle by 2

• Add 90 to the known angle

• Subtract the known angle from 90

What is a simple mnemonic to remember the sum of complementary angles?

• It's always right to give compliments

• It's always straight to be supplementary

• It's always acute to be complementary

• It's always obtuse to be supplementary

If one angle is 30 degrees, what is the measure of its complementary angle?

• 150 degrees

• 60 degrees

• 90 degrees

• 120 degrees

What is the complementary angle of a 15 degree angle?

• 75 degrees

• 180 degrees

• 105 degrees

• 165 degrees

What is the sum of supplementary angles?

• 270 degrees

• 360 degrees

• 180 degrees

• 90 degrees

If the sum of two angles is 180 degrees, what are these angles called?

• Complementary angles

• Supplementary angles

• Acute angles

• Obtuse angles

How can you remember the sum of supplementary angles?

• Form an 'L' into a '7' with a line

• Form a 'C' into a '9' with a line

• Form an 'S' into an '8' with a line

• Form an 'O' into a '0' with a line

If one angle is 120 degrees, what is the measure of its supplementary angle?

• 90 degrees

• 180 degrees

• 240 degrees

• 60 degrees

What is the supplementary angle of a 70 degree angle?

• 110 degrees

• 100 degrees

• 120 degrees

• 90 degrees