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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 832 · 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 46° and 44° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  2. 2.Are 54° and 58° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  3. 3.What is the supplement of 69° (in degrees)?
  4. 4.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 27°. What is the angle next to it on the same line (in degrees)?
  6. 6.Are 23° and 60° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  7. 7.What is the complement of 8° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One angle is 63°. What is its corresponding angle (in degrees)?
  9. 9.What is the complement of 17° (in degrees)?
  10. 10.What is the complement of 85° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 84°. What is the angle vertically opposite to it (in degrees)?
  12. 12.What is the supplement of 98° (in degrees)?
  13. 13.What is the supplement of 9° (in degrees)?
  14. 14.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  15. 15.Are 64° and 116° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 113°. What is its alternate interior angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 42°. What is its corresponding angle (in degrees)?
  18. 18.What is the complement of 22° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 137°. What is its corresponding angle (in degrees)?
  20. 20.What is the supplement of 25° (in degrees)?
  21. 21.What is the complement of 47° (in degrees)?
  22. 22.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 20° (in degrees)?
  24. 24.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 145°. What is the angle vertically opposite to it (in degrees)?
  27. 27.What is the complement of 65° (in degrees)?
  28. 28.What is the complement of 27° (in degrees)?
  29. 29.What is the supplement of 136° (in degrees)?
  30. 30.What is the complement of 28° (in degrees)?
  31. 31.What is the complement of 71° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 71°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 53°. What is its corresponding angle (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 129°. What is its other interior angle on the same side of the transversal (in degrees)?
  36. 36.Are 79° and 101° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  37. 37.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the supplement of 40° (in degrees)?
  39. 39.What is the supplement of 170° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 83°. What is its other interior angle on the same side of the transversal (in degrees)?

Answer key

  1. Complementary
  2. Neither
  3. 111
  4. 63
  5. 153
  6. Neither
  7. 82
  8. 63
  9. 73
  10. 5
  11. 84
  12. 82
  13. 171
  14. 141
  15. Supplementary
  16. 113
  17. 42
  18. 68
  19. 137
  20. 155
  21. 43
  22. 49
  23. 70
  24. 66
  25. 97
  26. 145
  27. 25
  28. 63
  29. 44
  30. 62
  31. 19
  32. 109
  33. 71
  34. 53
  35. 51
  36. Supplementary
  37. 105
  38. 140
  39. 10
  40. 97

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