Complementary and Supplementary Angles Concepts

The video tutorial explains complementary and supplementary angles, providing definitions, examples, and memory tricks to help remember their properties. Complementary angles add up to 90 degrees, forming a right angle, while supplementary angles add up to 180 degrees, forming a straight line. The tutorial also covers how to classify angle relationships and find missing angles in diagrams, concluding with homework instructions.

What is the sum of angles in a complementary relationship?

• 360 degrees

• 90 degrees

• 45 degrees

• 180 degrees

Which of the following is true for complementary angles?

• They are always adjacent

• They add up to 90 degrees

• They are always equal

• They form a straight line

What is the sum of angles in a supplementary relationship?

• 45 degrees

• 90 degrees

• 180 degrees

• 360 degrees

Which of the following is true for supplementary angles?

• They form a right angle

• They are always equal

• They are always adjacent

• They add up to 180 degrees

How can you remember the number of degrees in complementary angles?

• The letter C can be turned into 90

• The letter S can be turned into 90

• The letter S can be turned into 180

• The letter C can be turned into 180

How can you remember the number of degrees in supplementary angles?

• The letter C can be turned into 180

• The letter S can be turned into 180

• The letter S can be turned into 90

• The letter C can be turned into 90

If two angles add up to 110 degrees, what type of relationship do they have?

• Neither

• Both

• Supplementary

• Complementary

Two angles are 40 degrees and 50 degrees. What is their relationship?

• Complementary

• Both

• Supplementary

• Neither

Two angles are 130 degrees and 50 degrees. What is their relationship?

• Supplementary

• Complementary

• Both

• Neither

What is the missing angle if one angle is 25 degrees in a complementary relationship?

• 65 degrees

• 95 degrees

• 75 degrees

• 85 degrees