Complementary and Supplementary Angles Concepts

This video tutorial teaches how to write and solve equations using complementary and supplementary angles. It begins with a review of right, complementary, and supplementary angles. The Leaning Tower of Pisa is used as an example to demonstrate how to find the angle of lean using complementary angles. The lesson also covers solving for angles using subtraction and applying supplementary angles to find unknown measurements.

What is the sum of complementary angles?

• 180 degrees

• 45 degrees

• 90 degrees

• 360 degrees

How is a right angle typically marked in a drawing?

• With a line

• With a small square

• With a triangle

• With a circle

What is the sum of supplementary angles?

• 360 degrees

• 180 degrees

• 90 degrees

• 45 degrees

What angle is formed by the center of the Leaning Tower of Pisa and the street?

• 45 degrees

• 180 degrees

• 84.5 degrees

• 90 degrees

What is the missing angle when the angle to the street is 84.5 degrees?

• 20 degrees

• 15 degrees

• 10 degrees

• 5.5 degrees

How do you find the missing angle using complementary angles?

• Add the known angle to 90 degrees

• Subtract the known angle from 90 degrees

• Multiply the known angle by 2

• Divide the known angle by 2

What is the sum of the angles when using supplementary angles to find the leaning angle?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees

What is the angle of the street to the building in the supplementary angle method?

• 180 degrees

• 90 degrees

• 84.5 degrees

• 45 degrees

How do you solve for the unknown angle using supplementary angles?

• Divide the known angle by 2

• Multiply the known angle by 2

• Subtract the known angle from 180 degrees

• Add the known angle to 180 degrees

What have you learned in this lesson?

• How to draw angles

• How to write equations using complementary and supplementary angles

• How to measure angles with a protractor

• How to calculate the area of a triangle