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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 876 · 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 17° (in degrees)?
  2. 2.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
  3. 3.Are 28° and 100° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  4. 4.Are 50° and 16° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.What is the supplement of 153° (in degrees)?
  6. 6.Are 44° and 67° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  7. 7.Two straight lines cross each other. One of the angles formed is 48°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the supplement of 36° (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One angle is 63°. What is its corresponding angle (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 149°. What is the angle vertically opposite to it (in degrees)?
  11. 11.What is the supplement of 149° (in degrees)?
  12. 12.What is the supplement of 25° (in degrees)?
  13. 13.Are 59° and 121° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its alternate interior angle (in degrees)?
  15. 15.What is the complement of 22° (in degrees)?
  16. 16.What is the supplement of 93° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 96°. What is its corresponding angle (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One angle is 33°. What is its corresponding angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 148°. What is the angle next to it on the same line (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 156°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Are 29° and 61° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  22. 22.Are 22° and 158° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  23. 23.What is the supplement of 166° (in degrees)?
  24. 24.What is the complement of 34° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 103°. What is the angle next to it on the same line (in degrees)?
  26. 26.Are 21° and 120° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  27. 27.Two straight lines cross each other. One of the angles formed is 113°. What is the angle next to it on the same line (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its alternate interior angle (in degrees)?
  29. 29.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)?
  30. 30.Are 12° and 133° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  31. 31.Are 32° and 58° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  32. 32.What is the supplement of 175° (in degrees)?
  33. 33.What is the complement of 50° (in degrees)?
  34. 34.What is the supplement of 27° (in degrees)?
  35. 35.What is the supplement of 54° (in degrees)?
  36. 36.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 19° and 71° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.What is the supplement of 114° (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 67°. What is the angle vertically opposite to it (in degrees)?
  40. 40.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 73
  2. 130
  3. Neither
  4. Neither
  5. 27
  6. Neither
  7. 48
  8. 144
  9. 63
  10. 149
  11. 31
  12. 155
  13. Supplementary
  14. 140
  15. 68
  16. 87
  17. 96
  18. 33
  19. 32
  20. 156
  21. Complementary
  22. Supplementary
  23. 14
  24. 56
  25. 77
  26. Neither
  27. 67
  28. 145
  29. 42
  30. Neither
  31. Complementary
  32. 5
  33. 40
  34. 153
  35. 126
  36. 59
  37. Complementary
  38. 66
  39. 67
  40. 57

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