CPM Homework Banner

Home > MC2 > Chapter 7 > Lesson 7.2.2 > Problem 7-79

7-79.
  1. Sketch each angle below on your paper, and label each one with its measure in degrees. Homework Help ✎

    1. Identify whether each angle is an acute, obtuse, or right angle.

    2. Which angles could form a complementary pair?

    3. Which angles could form a supplementary pair?

Recall that acute angles are angles that measure less than 90°, obtuse angles measure more than 90°, and right angles measure exactly 90°.

Complementary angles are two angles that add up to 90°.
For example, a 30° angle and a 60° angle are complementary because 30°+ 60° = 90°.

Supplementary angles are angles that add up to 180°.
For example, 110° and 70° are supplementary angles because 110° + 70° = 180°.