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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 77 · 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 11° and 85° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  2. 2.What is the supplement of 142° (in degrees)?
  3. 3.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the supplement of 72° (in degrees)?
  5. 5.What is the complement of 8° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 126°. What is its corresponding angle (in degrees)?
  7. 7.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  8. 8.Are 53° and 37° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.What is the supplement of 96° (in degrees)?
  10. 10.What is the complement of 60° (in degrees)?
  11. 11.What is the complement of 72° (in degrees)?
  12. 12.Two angles are supplementary. One is 72° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the supplement of 85° (in degrees)?
  14. 14.What is the complement of 79° (in degrees)?
  15. 15.What is the supplement of 42° (in degrees)?
  16. 16.What is the complement of 52° (in degrees)?
  17. 17.Are 69° and 111° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its alternate interior angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 54°. What is its corresponding angle (in degrees)?
  20. 20.What is the complement of 68° (in degrees)?
  21. 21.What is the complement of 19° (in degrees)?
  22. 22.What is the supplement of 165° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 137°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Are 12° and 78° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 84°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.Are 42° and 48° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.Two parallel lines are cut by a transversal. One angle is 88°. What is its corresponding angle (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 63°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the complement of 63° (in degrees)?
  30. 30.What is the supplement of 45° (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 150°. What is its other interior angle on the same side of the transversal (in degrees)?
  32. 32.What is the supplement of 158° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 146°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Are 50° and 118° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  35. 35.Two parallel lines are cut by a transversal. One angle is 113°. What is its corresponding angle (in degrees)?
  36. 36.What is the complement of 15° (in degrees)?
  37. 37.What is the complement of 73° (in degrees)?
  38. 38.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two angles are supplementary. One is 78° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. Neither
  2. 38
  3. 91
  4. 108
  5. 82
  6. 126
  7. 80
  8. Complementary
  9. 84
  10. 30
  11. 18
  12. 126
  13. 95
  14. 11
  15. 138
  16. 38
  17. Supplementary
  18. 60
  19. 54
  20. 22
  21. 71
  22. 15
  23. 137
  24. Complementary
  25. 96
  26. Complementary
  27. 88
  28. 63
  29. 27
  30. 135
  31. 30
  32. 22
  33. 146
  34. Neither
  35. 113
  36. 75
  37. 17
  38. 53
  39. 67
  40. 129

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