Finding Complementary and Supplementary Angles - Answer Key

Sep 30, 2026

Uploaded by Noah

Answer key for a worksheet titled “Finding Complementary and Supplementary Angles.” It provides numerical solutions for 20 problems asking for missing angle measures given a complementary or supplementary relationship. Complementary questions use angle pairs summing to 90°, while supplementary questions use angle pairs summing to 180°. The listed answers supply the required missing degrees for each specified starting angle.

LanguageEnglish

CategoryExam

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Complementary angle problems

Problems 1-10

Supplementary angle problems

Problems 11-20

Finding Complementary and Supplementary Angles Name: | Solve each problem. | | | | | | | | Answers | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1) The complementary angle of 6° is ° . | | | | | | | | 1. | | | | | | | | 2) The complementary angle of 7° is ° . | | | | | | | | 2. | | | | | | | | 3) The complementary angle of 63° is ° . | | | | | | | | 3. | | | | | | | | 4) The complementary angle of 54° is ° . | | | | | | | | | | | | | | | | 5) The complementary angle of 81° is ° . | | | | | | | | 4. | | | | | | | | 6) The complementary angle of 84° is ° . | | | | | | | | 5. | | | | | | | | 7) The complementary angle of 12° is ° . | | | | | | | | 6. | | | | | | | | 8) The complementary angle of 13° is ° . | | | | | | | | 7. | | | | | | | | 9) The complementary angle of 87° is ° . | | | | | | | | 8. | | | | | | | | 10) The complementary angle of 80° is ° . | | | | | | | | 9. | | | | | | | | 11) The supplementary angle of 38° is ° . | | | | | | | | 10. | | | | | | | | 12) The supplementary angle of 123° is ° . | | | | | | | | 11. | | | | | | | | 13) The supplementary angle of 14° is ° . | | | | | | | | 12. | | | | | | | | 14) The supplementary angle of 68° is ° . | | | | | | | | 13. | | | | | | | | 15) The supplementary angle of 82° is ° . | | | | | | | | 14. | | | | | | | | 16) The supplementary angle of 122° is ° . | | | | | | | | 15. | | | | | | | | 17) The supplementary angle of 94° is ° . | | | | | | | | 16. | | | | | | | | 18) The supplementary angle of 19° is ° . | | | | | | | | 17. | | | | | | | | 19) The supplementary angle of 36° is ° . | | | | | | | | 18. | | | | | | | | 20) The supplementary angle of 2° is ° . | | | | | | | | 19.
20. | | | | | | | |
Math | [www.CommonCoreSheets.com](www.CommonCoreSheets.com) | 6 | 1-10
11-20 | 95 | 90 | 85 | 80 | | 75 | 70 | 65 | 60 | 55 | 50 | | | | | | 45 | 40 | 35 | 30 | | 25 | 20 | 15 | 10 | 5 | 0 | Finding Complementary and Supplementary Angles Name: Answer Key | Solve each problem.
1) The complementary angle of 6° is 84 ° .
2) The complementary angle of 7° is 83 ° .
3) The complementary angle of 63° is 27 ° .
4) The complementary angle of 54° is 36 ° .
5) The complementary angle of 81° is 9 ° .
6) The complementary angle of 84° is 6 ° .
7) The complementary angle of 12° is 78 ° .
8) The complementary angle of 13° is 77 ° .
9) The complementary angle of 87° is 3 ° .
10) The complementary angle of 80° is 10 ° .
11) The supplementary angle of 38° is 142 ° .
12) The supplementary angle of 123° is 57 ° .
13) The supplementary angle of 14° is 166 ° .
14) The supplementary angle of 68° is 112 ° .
15) The supplementary angle of 82° is 98 ° .
16) The supplementary angle of 122° is 58 ° .
17) The supplementary angle of 94° is 86 ° .
18) The supplementary angle of 19° is 161 ° .
19) The supplementary angle of 36° is 144 ° .
20) The supplementary angle of 2° is 178 ° . | Answers
1. 84 2. 83 3. 27 4. 36 5. 9 6. 6 7. 78 8. 77 9. 3 10. 10 11. 142 12. 57 13. 166 14. 112 15. 98 16. 58 17. 86 18. 161 19. 144
20. 178 | | --- | --- | Math [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 6 1-10 11-20 95 45 90 40 85 35 80 30 75 25 70 20 65 15 60 10 55 5 50 0 Finding Complementary and Supplementary Angles Name: | Solve each problem. | | | | | | | | | Answers | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1) The complementary an

FAQs

What rule defines complementary angles in this worksheet?

Complementary angles are pairs that sum to 90°. The key supplies the missing angle for each given measure.

What rule defines supplementary angles in this worksheet?

Supplementary angles are pairs that sum to 180°. The key provides the corresponding missing angle degrees.

How many problems are included in the answer key?

The answer key lists solutions for 20 problems, including both complementary and supplementary angle questions.

Sep 30, 2026

Uploaded by Noah