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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 235 · 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 173° (in degrees)?
  2. 2.Are 17° and 163° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  3. 3.What is the complement of 24° (in degrees)?
  4. 4.What is the supplement of 93° (in degrees)?
  5. 5.What is the complement of 72° (in degrees)?
  6. 6.Are 77° and 20° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 110°. What is its other interior angle on the same side of the transversal (in degrees)?
  8. 8.Are 10° and 170° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.Two straight lines cross each other. One of the angles formed is 134°. What is the angle next to it on the same line (in degrees)?
  10. 10.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the complement of 23° (in degrees)?
  12. 12.What is the complement of 25° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 79°. What is its corresponding angle (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 98°. What is the angle vertically opposite to it (in degrees)?
  15. 15.What is the complement of 78° (in degrees)?
  16. 16.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the complement of 76° (in degrees)?
  18. 18.What is the complement of 8° (in degrees)?
  19. 19.What is the supplement of 41° (in degrees)?
  20. 20.Are 16° and 164° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 81°. What is its alternate interior angle (in degrees)?
  22. 22.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the supplement of 108° (in degrees)?
  24. 24.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 92°. What is its corresponding angle (in degrees)?
  26. 26.What is the supplement of 154° (in degrees)?
  27. 27.What is the supplement of 87° (in degrees)?
  28. 28.Are 13° and 77° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  29. 29.Are 18° and 72° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.Are 17° and 73° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  31. 31.Two straight lines cross each other. One of the angles formed is 140°. What is the angle vertically opposite to it (in degrees)?
  32. 32.What is the complement of 38° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 107°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its alternate interior angle (in degrees)?
  35. 35.What is the complement of 64° (in degrees)?
  36. 36.Are 12° and 168° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  37. 37.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 134°. What is its corresponding angle (in degrees)?
  40. 40.What is the supplement of 9° (in degrees)?

Answer key

  1. 7
  2. Supplementary
  3. 66
  4. 87
  5. 18
  6. Neither
  7. 70
  8. Supplementary
  9. 46
  10. 64
  11. 67
  12. 65
  13. 79
  14. 98
  15. 12
  16. 138
  17. 14
  18. 82
  19. 139
  20. Supplementary
  21. 81
  22. 63
  23. 72
  24. 66
  25. 92
  26. 26
  27. 93
  28. Complementary
  29. Complementary
  30. Complementary
  31. 140
  32. 52
  33. 107
  34. 145
  35. 26
  36. Supplementary
  37. 71
  38. 62
  39. 134
  40. 171

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