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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 73 · 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.What is the supplement of 33° (in degrees)?
  2. 2.Are 35° and 55° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  3. 3.What is the complement of 40° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 89°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Are 21° and 159° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  6. 6.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 115°. What is its other interior angle on the same side of the transversal (in degrees)?
  8. 8.What is the supplement of 110° (in degrees)?
  9. 9.What is the complement of 22° (in degrees)?
  10. 10.What is the supplement of 39° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
  12. 12.What is the supplement of 13° (in degrees)?
  13. 13.Two angles are supplementary. One is 136° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 143°. What is its corresponding angle (in degrees)?
  15. 15.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the complement of 12° (in degrees)?
  17. 17.Are 10° and 80° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  18. 18.What is the supplement of 95° (in degrees)?
  19. 19.What is the supplement of 121° (in degrees)?
  20. 20.Are 28° and 152° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.What is the complement of 27° (in degrees)?
  22. 22.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 67°. What is its alternate interior angle (in degrees)?
  24. 24.What is the supplement of 154° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 159°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the supplement of 74° (in degrees)?
  27. 27.What is the supplement of 96° (in degrees)?
  28. 28.Are 18° and 72° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  29. 29.What is the supplement of 144° (in degrees)?
  30. 30.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 114°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the complement of 66° (in degrees)?
  34. 34.Are 17° and 93° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.Two parallel lines are cut by a transversal. One angle is 72°. What is its corresponding angle (in degrees)?
  36. 36.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 47° and 133° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.Are 13° and 78° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  39. 39.What is the complement of 21° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 110°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 147
  2. Complementary
  3. 50
  4. 91
  5. Supplementary
  6. 59
  7. 65
  8. 70
  9. 68
  10. 141
  11. 27
  12. 167
  13. 158
  14. 143
  15. 79
  16. 78
  17. Complementary
  18. 85
  19. 59
  20. Supplementary
  21. 63
  22. 64
  23. 67
  24. 26
  25. 159
  26. 106
  27. 84
  28. Complementary
  29. 36
  30. 80
  31. 66
  32. 66
  33. 24
  34. Neither
  35. 72
  36. 138
  37. Supplementary
  38. Neither
  39. 69
  40. 110

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