Finding Missing Complementary and Supplementary Angles

This video tutorial by Mr. J covers 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 for each type, demonstrating how to find missing angles using subtraction and mental math. It also includes methods to verify the correctness of the calculated angles.

What is the sum of complementary angles?

• 180 degrees

• 45 degrees

• 360 degrees

• 90 degrees

If one angle is 25 degrees, what is the measure of its complementary angle?

• 75 degrees

• 65 degrees

• 55 degrees

• 90 degrees

What is the missing angle if one angle is 72 degrees and they are complementary?

• 18 degrees

• 108 degrees

• 28 degrees

• 82 degrees

What property do complementary angles have?

• They form a straight line

• They are always acute angles

• They add up to 90 degrees

• They add up to 180 degrees

How can you verify if you have correctly found a complementary angle?

• Add them to see if they equal 90

• Multiply by 2

• Divide by 2

• Subtract from 180

What is the sum of supplementary angles?

• 90 degrees

• 180 degrees

• 360 degrees

• 270 degrees

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

• 125 degrees

• 105 degrees

• 115 degrees

• 95 degrees

What is a characteristic of supplementary angles?

• They are always obtuse angles

• They add up to 180 degrees

• They add up to 90 degrees

• They form a right angle

How can you check if you have correctly found a supplementary angle?

• Add them to see if they equal 180

• Subtract from 360

• Multiply by 2

• Divide by 2

If an angle measures 124 degrees, what is its supplementary angle?

• 66 degrees

• 46 degrees

• 56 degrees

• 64 degrees