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Angles worksheet

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Angles practice

Triangles and supplements · advanced
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  1. 1. Two angles are supplementary. One measures 25 degrees. What does the other measure?
  2. 2. Two angles of a triangle measure 45 and 105 degrees. What does the third measure?
  3. 3. Two angles of a triangle measure 125 and 25 degrees. What does the third measure?
  4. 4. Two angles are supplementary. One measures 145 degrees. What does the other measure?
  5. 5. Two angles are supplementary. One measures 95 degrees. What does the other measure?
  6. 6. Two angles are supplementary. One measures 105 degrees. What does the other measure?
  7. 7. Two angles of a triangle measure 85 and 65 degrees. What does the third measure?
  8. 8. Two angles are supplementary. One measures 45 degrees. What does the other measure?
  9. 9. Two angles are supplementary. One measures 55 degrees. What does the other measure?
  10. 10. Two angles of a triangle measure 95 and 35 degrees. What does the third measure?
  11. 11. Two angles of a triangle measure 35 and 125 degrees. What does the third measure?
  12. 12. Two angles of a triangle measure 115 and 25 degrees. What does the third measure?
  13. 13. Two angles are supplementary. One measures 125 degrees. What does the other measure?
  14. 14. Two angles of a triangle measure 35 and 85 degrees. What does the third measure?
  15. 15. Two angles of a triangle measure 65 and 25 degrees. What does the third measure?
  16. 16. Two angles are supplementary. One measures 85 degrees. What does the other measure?
  17. 17. Two angles are supplementary. One measures 135 degrees. What does the other measure?
  18. 18. Two angles are supplementary. One measures 15 degrees. What does the other measure?
  19. 19. Two angles of a triangle measure 45 and 55 degrees. What does the third measure?
  20. 20. Two angles are supplementary. One measures 65 degrees. What does the other measure?
  21. 21. Two angles of a triangle measure 135 and 25 degrees. What does the third measure?
  22. 22. Two angles of a triangle measure 65 and 35 degrees. What does the third measure?
  23. 23. Two angles of a triangle measure 55 and 105 degrees. What does the third measure?
  24. 24. Two angles are supplementary. One measures 35 degrees. What does the other measure?
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Angles practice

Triangles and supplements · advanced
Name Date
Answer key
  1. 1. Two angles are supplementary. One measures 25 degrees. What does the other measure? 155
  2. 2. Two angles of a triangle measure 45 and 105 degrees. What does the third measure? 30
  3. 3. Two angles of a triangle measure 125 and 25 degrees. What does the third measure? 30
  4. 4. Two angles are supplementary. One measures 145 degrees. What does the other measure? 35
  5. 5. Two angles are supplementary. One measures 95 degrees. What does the other measure? 85
  6. 6. Two angles are supplementary. One measures 105 degrees. What does the other measure? 75
  7. 7. Two angles of a triangle measure 85 and 65 degrees. What does the third measure? 30
  8. 8. Two angles are supplementary. One measures 45 degrees. What does the other measure? 135
  9. 9. Two angles are supplementary. One measures 55 degrees. What does the other measure? 125
  10. 10. Two angles of a triangle measure 95 and 35 degrees. What does the third measure? 50
  11. 11. Two angles of a triangle measure 35 and 125 degrees. What does the third measure? 20
  12. 12. Two angles of a triangle measure 115 and 25 degrees. What does the third measure? 40
  13. 13. Two angles are supplementary. One measures 125 degrees. What does the other measure? 55
  14. 14. Two angles of a triangle measure 35 and 85 degrees. What does the third measure? 60
  15. 15. Two angles of a triangle measure 65 and 25 degrees. What does the third measure? 90
  16. 16. Two angles are supplementary. One measures 85 degrees. What does the other measure? 95
  17. 17. Two angles are supplementary. One measures 135 degrees. What does the other measure? 45
  18. 18. Two angles are supplementary. One measures 15 degrees. What does the other measure? 165
  19. 19. Two angles of a triangle measure 45 and 55 degrees. What does the third measure? 80
  20. 20. Two angles are supplementary. One measures 65 degrees. What does the other measure? 115
  21. 21. Two angles of a triangle measure 135 and 25 degrees. What does the third measure? 20
  22. 22. Two angles of a triangle measure 65 and 35 degrees. What does the third measure? 80
  23. 23. Two angles of a triangle measure 55 and 105 degrees. What does the third measure? 20
  24. 24. Two angles are supplementary. One measures 35 degrees. What does the other measure? 145
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Standards this covers

  • 4.G.A.1
  • 4.MD.C.5
  • 7.G.B.5
  • 8.G.A.5

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