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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 286 · 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 complement of 85° (in degrees)?
  2. 2.What is the supplement of 68° (in degrees)?
  3. 3.Are 73° and 17° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  4. 4.What is the supplement of 100° (in degrees)?
  5. 5.What is the supplement of 22° (in degrees)?
  6. 6.What is the complement of 33° (in degrees)?
  7. 7.What is the complement of 82° (in degrees)?
  8. 8.What is the supplement of 143° (in degrees)?
  9. 9.What is the supplement of 76° (in degrees)?
  10. 10.Are 69° and 21° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  11. 11.What is the complement of 65° (in degrees)?
  12. 12.What is the supplement of 83° (in degrees)?
  13. 13.What is the supplement of 151° (in degrees)?
  14. 14.What is the supplement of 16° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 138°. What is the angle next to it on the same line (in degrees)?
  16. 16.Are 11° and 79° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  17. 17.Two parallel lines are cut by a transversal. One angle is 104°. What is its corresponding angle (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One angle is 112°. What is its corresponding angle (in degrees)?
  19. 19.What is the supplement of 57° (in degrees)?
  20. 20.What is the complement of 53° (in degrees)?
  21. 21.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the supplement of 41° (in degrees)?
  23. 23.Are 26° and 64° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  25. 25.Are 78° and 102° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 126°. What is its alternate interior angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 91°. What is its other interior angle on the same side of the transversal (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 142°. What is its corresponding angle (in degrees)?
  30. 30.What is the complement of 13° (in degrees)?
  31. 31.What is the supplement of 173° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 134°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Are 19° and 71° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.Are 55° and 52° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 39°. What is its other interior angle on the same side of the transversal (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 136°. What is the angle next to it on the same line (in degrees)?
  37. 37.Are 69° and 156° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its alternate interior angle (in degrees)?
  39. 39.What is the complement of 73° (in degrees)?
  40. 40.Are 37° and 143° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. 5
  2. 112
  3. Complementary
  4. 80
  5. 158
  6. 57
  7. 8
  8. 37
  9. 104
  10. Complementary
  11. 25
  12. 97
  13. 29
  14. 164
  15. 42
  16. Complementary
  17. 104
  18. 112
  19. 123
  20. 37
  21. 63
  22. 139
  23. Complementary
  24. 80
  25. Supplementary
  26. 129
  27. 126
  28. 89
  29. 142
  30. 77
  31. 7
  32. 134
  33. Complementary
  34. Neither
  35. 141
  36. 44
  37. Neither
  38. 60
  39. 17
  40. Supplementary

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