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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 331 · 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 56° and 124° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  2. 2.Are 49° and 131° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  3. 3.What is the supplement of 19° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One angle is 141°. What is its corresponding angle (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 71°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 116°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the supplement of 122° (in degrees)?
  10. 10.What is the supplement of 58° (in degrees)?
  11. 11.What is the complement of 40° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 64°. What is its corresponding angle (in degrees)?
  13. 13.What is the supplement of 26° (in degrees)?
  14. 14.Are 71° and 109° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  15. 15.Are 28° and 62° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  16. 16.What is the complement of 79° (in degrees)?
  17. 17.What is the complement of 22° (in degrees)?
  18. 18.What is the supplement of 10° (in degrees)?
  19. 19.What is the complement of 20° (in degrees)?
  20. 20.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the supplement of 86° (in degrees)?
  22. 22.Are 10° and 104° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  23. 23.What is the supplement of 140° (in degrees)?
  24. 24.What is the complement of 48° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 118°. What is the angle vertically opposite to it (in degrees)?
  26. 26.Two angles are supplementary. One is 114° more than the other. What is the bigger angle (in degrees)?
  27. 27.Are 30° and 60° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  28. 28.Are 73° and 17° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  29. 29.Two parallel lines are cut by a transversal. One angle is 108°. What is its corresponding angle (in degrees)?
  30. 30.What is the complement of 38° (in degrees)?
  31. 31.Are 36° and 144° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  32. 32.What is the supplement of 25° (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 82°. What is its alternate interior angle (in degrees)?
  34. 34.Are 66° and 24° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  35. 35.Two straight lines cross each other. One of the angles formed is 82°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Are 64° and 26° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.Two straight lines cross each other. One of the angles formed is 146°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Are 76° and 104° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  39. 39.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 99°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. Supplementary
  2. Supplementary
  3. 161
  4. 141
  5. 135
  6. 69
  7. 71
  8. 116
  9. 58
  10. 122
  11. 50
  12. 64
  13. 154
  14. Supplementary
  15. Complementary
  16. 11
  17. 68
  18. 170
  19. 70
  20. 49
  21. 94
  22. Neither
  23. 40
  24. 42
  25. 118
  26. 147
  27. Complementary
  28. Complementary
  29. 108
  30. 52
  31. Supplementary
  32. 155
  33. 82
  34. Complementary
  35. 82
  36. Complementary
  37. 146
  38. Supplementary
  39. 53
  40. 81

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