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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 383 · 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 147° (in degrees)?
  2. 2.Are 17° and 142° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  3. 3.What is the complement of 5° (in degrees)?
  4. 4.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the supplement of 155° (in degrees)?
  6. 6.Are 67° and 113° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  7. 7.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?
  8. 8.What is the supplement of 57° (in degrees)?
  9. 9.Are 31° and 149° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  10. 10.Two parallel lines are cut by a transversal. One angle is 68°. What is its corresponding angle (in degrees)?
  11. 11.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  12. 12.Are 10° and 80° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  13. 13.Two straight lines cross each other. One of the angles formed is 129°. What is the angle next to it on the same line (in degrees)?
  14. 14.What is the supplement of 152° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One angle is 104°. What is its corresponding angle (in degrees)?
  16. 16.What is the supplement of 109° (in degrees)?
  17. 17.Are 39° and 51° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.Two straight lines cross each other. One of the angles formed is 80°. What is the angle vertically opposite to it (in degrees)?
  19. 19.What is the supplement of 6° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 89°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 106°. What is the angle next to it on the same line (in degrees)?
  22. 22.What is the complement of 81° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its alternate interior angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 91°. What is the angle vertically opposite to it (in degrees)?
  25. 25.What is the complement of 19° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 87°. What is its corresponding angle (in degrees)?
  27. 27.Are 28° and 89° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  28. 28.Two straight lines cross each other. One of the angles formed is 85°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.Are 15° and 75° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.Two parallel lines are cut by a transversal. One angle is 147°. What is its corresponding angle (in degrees)?
  33. 33.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  34. 34.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)?
  35. 35.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the supplement of 167° (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 25°. What is the angle vertically opposite to it (in degrees)?
  40. 40.Are 19° and 161° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. 33
  2. Neither
  3. 85
  4. 156
  5. 25
  6. Supplementary
  7. 136
  8. 123
  9. Supplementary
  10. 68
  11. 53
  12. Complementary
  13. 51
  14. 28
  15. 104
  16. 71
  17. Complementary
  18. 80
  19. 174
  20. 89
  21. 74
  22. 9
  23. 59
  24. 91
  25. 71
  26. 87
  27. Neither
  28. 85
  29. 65
  30. 35
  31. Complementary
  32. 147
  33. 50
  34. 70
  35. 71
  36. 66
  37. 55
  38. 13
  39. 25
  40. Supplementary

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