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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 921 · 40 sums
TalentJR

The method (90, 180, equal): Complement of a = 90 − a. Supplement of a = 180 − a. Lines crossing: vertically opposite angles are equal; a linear pair adds up to 180°. Parallel lines: corresponding angles equal, alternate interior angles equal, interior angles on the same side add up to 180°. One angle d° more than the other: bigger = (total + d) ÷ 2.

NameDateTime takenScore ___ / 40
  1. 1.Are 80° and 10° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 119°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.What is the supplement of 92° (in degrees)?
  5. 5.What is the complement of 69° (in degrees)?
  6. 6.What is the complement of 16° (in degrees)?
  7. 7.What is the complement of 31° (in degrees)?
  8. 8.What is the complement of 68° (in degrees)?
  9. 9.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the complement of 35° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 100°. What is the angle next to it on the same line (in degrees)?
  12. 12.Are 64° and 26° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 107°. What is its alternate interior angle (in degrees)?
  14. 14.What is the complement of 5° (in degrees)?
  15. 15.Are 64° and 116° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  16. 16.What is the complement of 48° (in degrees)?
  17. 17.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  18. 18.Are 30° and 60° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its alternate interior angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 130°. What is its corresponding angle (in degrees)?
  21. 21.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the complement of 66° (in degrees)?
  23. 23.Are 16° and 64° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  24. 24.What is the complement of 9° (in degrees)?
  25. 25.What is the complement of 72° (in degrees)?
  26. 26.What is the supplement of 12° (in degrees)?
  27. 27.What is the supplement of 64° (in degrees)?
  28. 28.What is the complement of 27° (in degrees)?
  29. 29.Are 69° and 21° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  30. 30.What is the complement of 40° (in degrees)?
  31. 31.What is the complement of 18° (in degrees)?
  32. 32.Are 23° and 157° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  33. 33.What is the complement of 45° (in degrees)?
  34. 34.Are 78° and 12° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  35. 35.Two straight lines cross each other. One of the angles formed is 39°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the complement of 11° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 75°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Are 77° and 13° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  40. 40.What is the complement of 82° (in degrees)?

Answer key

  1. Complementary
  2. 51
  3. 61
  4. 88
  5. 21
  6. 74
  7. 59
  8. 22
  9. 58
  10. 55
  11. 80
  12. Complementary
  13. 107
  14. 85
  15. Supplementary
  16. 42
  17. 75
  18. Complementary
  19. 123
  20. 130
  21. 80
  22. 24
  23. Neither
  24. 81
  25. 18
  26. 168
  27. 116
  28. 63
  29. Complementary
  30. 50
  31. 72
  32. Supplementary
  33. 45
  34. Complementary
  35. 39
  36. 55
  37. 79
  38. 75
  39. Complementary
  40. 8

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