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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 947 · 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 39° and 12° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.Are 50° and 130° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  3. 3.Are 57° and 33° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  4. 4.What is the supplement of 8° (in degrees)?
  5. 5.What is the supplement of 152° (in degrees)?
  6. 6.What is the complement of 13° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 90°. What is the angle next to it on the same line (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One angle is 110°. What is its corresponding angle (in degrees)?
  9. 9.Are 51° and 19° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.What is the supplement of 111° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 89°. What is the angle vertically opposite to it (in degrees)?
  12. 12.What is the complement of 6° (in degrees)?
  13. 13.What is the complement of 38° (in degrees)?
  14. 14.What is the supplement of 127° (in degrees)?
  15. 15.What is the supplement of 117° (in degrees)?
  16. 16.Are 10° and 151° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  17. 17.What is the supplement of 65° (in degrees)?
  18. 18.What is the supplement of 36° (in degrees)?
  19. 19.Are 71° and 109° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  20. 20.What is the supplement of 120° (in degrees)?
  21. 21.What is the supplement of 98° (in degrees)?
  22. 22.Are 59° and 31° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  23. 23.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its alternate interior angle (in degrees)?
  25. 25.Are 21° and 42° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  26. 26.Two parallel lines are cut by a transversal. One angle is 31°. What is its corresponding angle (in degrees)?
  27. 27.What is the complement of 82° (in degrees)?
  28. 28.What is the supplement of 78° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 110°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 22°. What is the angle next to it on the same line (in degrees)?
  31. 31.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the complement of 44° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 36°. What is the angle next to it on the same line (in degrees)?
  34. 34.Are 46° and 44° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  35. 35.Are 31° and 59° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.Two straight lines cross each other. One of the angles formed is 107°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two angles are complementary. One is 64° 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 160°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. Neither
  2. Supplementary
  3. Complementary
  4. 172
  5. 28
  6. 77
  7. 90
  8. 110
  9. Neither
  10. 69
  11. 89
  12. 84
  13. 52
  14. 53
  15. 63
  16. Neither
  17. 115
  18. 144
  19. Supplementary
  20. 60
  21. 82
  22. Complementary
  23. 61
  24. 37
  25. Neither
  26. 31
  27. 8
  28. 102
  29. 110
  30. 158
  31. 114
  32. 46
  33. 144
  34. Complementary
  35. Complementary
  36. 73
  37. 128
  38. 156
  39. 77
  40. 20

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