Supplementary and Complementary Angles
Learning Objective
I can calculate angle measures using the relationships of supplementary and complementary angles.
Key Concepts
Complementary angles are two or more angles that add up to exactly 90 degrees.
Supplementary angles are two or more angles that add up to exactly 180 degrees, forming a straight line.
To find the complement of an angle, subtract the given angle from 90 degrees; to find the supplement, subtract from 180 degrees.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
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1. What is the difference between complementary and supplementary angles?
2. If angle A is 52 degrees, what is the measure of its complement?
3. If angle B is 115 degrees, what is the measure of its supplement?
...and 9 more questions
Educational Video
Complementary and Supplementary Angles FULL LESSON WITH PRACTICE PROBLEMS AND SOLUTIONS
Mr. Ace Math