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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 181 · 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 126° (in degrees)?
  2. 2.What is the complement of 26° (in degrees)?
  3. 3.What is the supplement of 118° (in degrees)?
  4. 4.Are 13° and 77° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  5. 5.Are 29° and 90° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  6. 6.Are 17° and 156° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Two straight lines cross each other. One of the angles formed is 77°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the complement of 21° (in degrees)?
  9. 9.What is the supplement of 89° (in degrees)?
  10. 10.Are 19° and 27° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  11. 11.Two straight lines cross each other. One of the angles formed is 33°. What is the angle next to it on the same line (in degrees)?
  12. 12.What is the complement of 81° (in degrees)?
  13. 13.What is the supplement of 15° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 67°. What is its corresponding angle (in degrees)?
  15. 15.What is the complement of 82° (in degrees)?
  16. 16.Are 50° and 40° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  17. 17.Two straight lines cross each other. One of the angles formed is 139°. What is the angle next to it on the same line (in degrees)?
  18. 18.What is the complement of 22° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 124°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.What is the supplement of 24° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
  22. 22.What is the complement of 70° (in degrees)?
  23. 23.What is the supplement of 169° (in degrees)?
  24. 24.What is the complement of 63° (in degrees)?
  25. 25.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the complement of 85° (in degrees)?
  27. 27.What is the supplement of 111° (in degrees)?
  28. 28.What is the complement of 35° (in degrees)?
  29. 29.What is the supplement of 107° (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 47°. What is its alternate interior angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 72°. What is the angle next to it on the same line (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its alternate interior angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its other interior angle on the same side of the transversal (in degrees)?
  34. 34.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 91°. What is the angle next to it on the same line (in degrees)?
  36. 36.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the supplement of 117° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 45°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the complement of 77° (in degrees)?
  40. 40.What is the supplement of 149° (in degrees)?

Answer key

  1. 54
  2. 64
  3. 62
  4. Complementary
  5. Neither
  6. Neither
  7. 77
  8. 69
  9. 91
  10. Neither
  11. 147
  12. 9
  13. 165
  14. 67
  15. 8
  16. Complementary
  17. 41
  18. 68
  19. 56
  20. 156
  21. 55
  22. 20
  23. 11
  24. 27
  25. 77
  26. 5
  27. 69
  28. 55
  29. 73
  30. 47
  31. 108
  32. 106
  33. 143
  34. 93
  35. 89
  36. 151
  37. 63
  38. 45
  39. 13
  40. 31

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