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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 891 · 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 46° (in degrees)?
  2. 2.What is the supplement of 96° (in degrees)?
  3. 3.What is the supplement of 15° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 89°. What is the angle next to it on the same line (in degrees)?
  5. 5.What is the complement of 63° (in degrees)?
  6. 6.What is the supplement of 14° (in degrees)?
  7. 7.Are 27° and 153° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  8. 8.What is the complement of 28° (in degrees)?
  9. 9.Are 64° and 39° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  10. 10.Two straight lines cross each other. One of the angles formed is 102°. What is the angle next to it on the same line (in degrees)?
  11. 11.What is the complement of 10° (in degrees)?
  12. 12.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the supplement of 12° (in degrees)?
  14. 14.What is the supplement of 20° (in degrees)?
  15. 15.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  16. 16.Are 58° and 32° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  17. 17.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the complement of 60° (in degrees)?
  19. 19.Are 54° and 126° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  20. 20.Are 60° and 30° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  21. 21.What is the complement of 84° (in degrees)?
  22. 22.What is the complement of 72° (in degrees)?
  23. 23.Are 22° and 37° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Two parallel lines are cut by a transversal. One angle is 63°. What is its corresponding angle (in degrees)?
  25. 25.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  26. 26.Are 24° and 66° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 89°. What is its other interior angle on the same side of the transversal (in degrees)?
  28. 28.What is the supplement of 38° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 82°. What is the angle next to it on the same line (in degrees)?
  30. 30.What is the supplement of 25° (in degrees)?
  31. 31.Are 27° and 63° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  32. 32.What is the complement of 13° (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 138°. What is its corresponding angle (in degrees)?
  34. 34.What is the supplement of 37° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 76°. What is the angle next to it on the same line (in degrees)?
  36. 36.What is the complement of 38° (in degrees)?
  37. 37.What is the complement of 26° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 58°. What is its alternate interior angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 150°. What is its corresponding angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 134
  2. 84
  3. 165
  4. 91
  5. 27
  6. 166
  7. Supplementary
  8. 62
  9. Neither
  10. 78
  11. 80
  12. 77
  13. 168
  14. 160
  15. 68
  16. Complementary
  17. 54
  18. 30
  19. Supplementary
  20. Complementary
  21. 6
  22. 18
  23. Neither
  24. 63
  25. 55
  26. Complementary
  27. 91
  28. 142
  29. 98
  30. 155
  31. Complementary
  32. 77
  33. 138
  34. 143
  35. 104
  36. 52
  37. 64
  38. 58
  39. 150
  40. 49

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