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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 475 · 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 19° and 71° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 66°. What is its other interior angle on the same side of the transversal (in degrees)?
  3. 3.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the complement of 79° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 93°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the supplement of 149° (in degrees)?
  8. 8.What is the supplement of 54° (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One angle is 38°. What is its corresponding angle (in degrees)?
  10. 10.What is the supplement of 130° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 116°. What is its alternate interior angle (in degrees)?
  12. 12.What is the supplement of 119° (in degrees)?
  13. 13.What is the supplement of 175° (in degrees)?
  14. 14.What is the complement of 32° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 43°. What is the angle next to it on the same line (in degrees)?
  16. 16.What is the supplement of 32° (in degrees)?
  17. 17.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 84°. What is its alternate interior angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 153°. What is the angle next to it on the same line (in degrees)?
  20. 20.Are 47° and 13° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  21. 21.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 131°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Are 48° and 169° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.Are 13° and 77° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  25. 25.Are 20° and 70° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  26. 26.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  27. 27.Are 74° and 16° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  28. 28.Two straight lines cross each other. One of the angles formed is 154°. What is the angle next to it on the same line (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 33°. What is its alternate interior angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.What is the complement of 47° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 72°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the complement of 73° (in degrees)?
  34. 34.Are 52° and 136° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.Two straight lines cross each other. One of the angles formed is 128°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Are 72° and 18° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  37. 37.Are 54° and 77° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  38. 38.Are 39° and 113° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  39. 39.Two straight lines cross each other. One of the angles formed is 142°. What is the angle vertically opposite to it (in degrees)?
  40. 40.What is the complement of 7° (in degrees)?

Answer key

  1. Complementary
  2. 114
  3. 96
  4. 11
  5. 93
  6. 61
  7. 31
  8. 126
  9. 38
  10. 50
  11. 116
  12. 61
  13. 5
  14. 58
  15. 137
  16. 148
  17. 75
  18. 84
  19. 27
  20. Neither
  21. 97
  22. 131
  23. Neither
  24. Complementary
  25. Complementary
  26. 111
  27. Complementary
  28. 26
  29. 33
  30. 143
  31. 43
  32. 108
  33. 17
  34. Neither
  35. 128
  36. Complementary
  37. Neither
  38. Neither
  39. 142
  40. 83

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