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8-106.
  1. Sketch each angle below on your paper, and label each one with its measure in degrees. Homework Help ✎
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    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?

Remember:
1) Right angles are 90°.
2) Acute angles are less than 90°.
3) Obtuse angles are greater than 90°, and less than 180°.

Complementary angles add to 90°.

40° + 50° = 90°. Thus, 40° and 50° are a complementary pair.

Supplementary angles add to 180°.