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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 803 · 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 16° and 98° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  2. 2.Are 76° and 104° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  3. 3.Are 37° and 53° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  4. 4.Two parallel lines are cut by a transversal. One angle is 143°. What is its corresponding angle (in degrees)?
  5. 5.What is the complement of 82° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  7. 7.What is the supplement of 81° (in degrees)?
  8. 8.What is the supplement of 20° (in degrees)?
  9. 9.What is the supplement of 103° (in degrees)?
  10. 10.Two angles are supplementary. One is 110° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 79° and 101° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the complement of 12° (in degrees)?
  14. 14.Are 50° and 15° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  15. 15.Are 48° and 132° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  16. 16.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the supplement of 171° (in degrees)?
  18. 18.Are 24° and 156° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.Two straight lines cross each other. One of the angles formed is 47°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 83°. What is its corresponding angle (in degrees)?
  22. 22.What is the supplement of 56° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 52°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 96°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.Are 78° and 12° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  26. 26.What is the supplement of 63° (in degrees)?
  27. 27.What is the complement of 63° (in degrees)?
  28. 28.What is the supplement of 125° (in degrees)?
  29. 29.What is the supplement of 45° (in degrees)?
  30. 30.What is the complement of 11° (in degrees)?
  31. 31.Are 57° and 33° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  32. 32.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)?
  33. 33.Two straight lines cross each other. One of the angles formed is 104°. What is the angle next to it on the same line (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 150°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 87°. What is the angle next to it on the same line (in degrees)?
  36. 36.What is the supplement of 107° (in degrees)?
  37. 37.Are 57° and 66° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  38. 38.Two parallel lines are cut by a transversal. One angle is 119°. What is its corresponding angle (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  40. 40.What is the complement of 75° (in degrees)?

Answer key

  1. Neither
  2. Supplementary
  3. Complementary
  4. 143
  5. 8
  6. 124
  7. 99
  8. 160
  9. 77
  10. 145
  11. Supplementary
  12. 76
  13. 78
  14. Neither
  15. Supplementary
  16. 130
  17. 9
  18. Supplementary
  19. 47
  20. 108
  21. 83
  22. 124
  23. 52
  24. 84
  25. Complementary
  26. 117
  27. 27
  28. 55
  29. 135
  30. 79
  31. Complementary
  32. 129
  33. 76
  34. 150
  35. 93
  36. 73
  37. Neither
  38. 119
  39. 60
  40. 15

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