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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 40 · 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 107° (in degrees)?
  2. 2.What is the complement of 42° (in degrees)?
  3. 3.What is the supplement of 132° (in degrees)?
  4. 4.What is the supplement of 87° (in degrees)?
  5. 5.Are 72° and 128° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  6. 6.What is the supplement of 17° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 21°. What is the angle next to it on the same line (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 67°. What is its other interior angle on the same side of the transversal (in degrees)?
  9. 9.Are 22° and 65° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 99°. What is its other interior angle on the same side of the transversal (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 62°. What is the angle vertically opposite to it (in degrees)?
  12. 12.What is the complement of 14° (in degrees)?
  13. 13.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  14. 14.Are 71° and 19° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  15. 15.Are 31° and 149° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  16. 16.What is the complement of 8° (in degrees)?
  17. 17.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)?
  18. 18.Are 60° and 136° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.What is the complement of 85° (in degrees)?
  20. 20.What is the supplement of 154° (in degrees)?
  21. 21.What is the supplement of 54° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 66°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Are 78° and 102° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.Are 60° and 63° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  25. 25.Two straight lines cross each other. One of the angles formed is 131°. What is the angle next to it on the same line (in degrees)?
  26. 26.Are 52° and 128° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  27. 27.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the complement of 80° (in degrees)?
  29. 29.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  31. 31.What is the supplement of 157° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 75°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the complement of 47° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 46°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the supplement of 148° (in degrees)?
  36. 36.Are 76° and 104° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.What is the complement of 22° (in degrees)?
  38. 38.What is the complement of 45° (in degrees)?
  39. 39.Are 54° and 36° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  40. 40.What is the complement of 62° (in degrees)?

Answer key

  1. 73
  2. 48
  3. 48
  4. 93
  5. Neither
  6. 163
  7. 159
  8. 113
  9. Neither
  10. 81
  11. 62
  12. 76
  13. 80
  14. Complementary
  15. Supplementary
  16. 82
  17. 42
  18. Neither
  19. 5
  20. 26
  21. 126
  22. 66
  23. Supplementary
  24. Neither
  25. 49
  26. Supplementary
  27. 48
  28. 10
  29. 75
  30. 112
  31. 23
  32. 105
  33. 43
  34. 46
  35. 32
  36. Supplementary
  37. 68
  38. 45
  39. Complementary
  40. 28

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