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7th Grade Math (Math 7) · Chapter 8 · Lesson 8.2 · Printable PDF

Complementary and Supplementary Angles Worksheet with Answer Key

6 problems on complementary and supplementary angles: complements and supplements, finding partner angles, sorting angle pairs, solving with algebra, a false claim about supplements, and a cut piece of felt. 2 pages, with a worked answer key.

6 problems2 pagesanswer key
Printable Complementary and supplementary angles worksheet with answer key - 7th Grade Math (Math 7) (Page 1 PDF preview)
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What's on the worksheet

  1. Fill in each blank with an angle measure for a complement or supplement.
  2. Find each angle measure by finding the angle first and then its partner.
    The supplement of an angle is 131°. Find the complement of the angle.Find the supplement of the complement of 35°.Find the complement of the supplement of 158°.The supplement of an angle is 95.5°. Find the complement of the angle.
  3. Sort pairs of angles into complementary and supplementary from their measures.
  4. Find three angles from complement and supplement conditions.
  5. Check Leah's claim about supplementary angles and give a counterexample.
  6. Find angle measures in a rectangle of felt cut in two.

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The free lesson teaches it with worked examples and practice problems.

Complementary and supplementary angles: the lesson ›

More Chapter 8 worksheets: Angles, triangles and constructions