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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 784 · 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 15° and 165° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 124°. What is its alternate interior angle (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 35°. What is its alternate interior angle (in degrees)?
  4. 4.What is the supplement of 63° (in degrees)?
  5. 5.Are 79° and 35° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  6. 6.What is the complement of 70° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 138°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the complement of 84° (in degrees)?
  9. 9.What is the supplement of 43° (in degrees)?
  10. 10.What is the supplement of 126° (in degrees)?
  11. 11.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  12. 12.Are 30° and 60° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.What is the complement of 49° (in degrees)?
  14. 14.What is the complement of 13° (in degrees)?
  15. 15.What is the supplement of 109° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 35°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 104°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the complement of 75° (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 48°. What is its corresponding angle (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 94°. What is the angle vertically opposite to it (in degrees)?
  24. 24.What is the supplement of 102° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 34°. What is its corresponding angle (in degrees)?
  26. 26.Are 20° and 33° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 82°. What is its other interior angle on the same side of the transversal (in degrees)?
  28. 28.Are 62° and 125° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  29. 29.What is the supplement of 52° (in degrees)?
  30. 30.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?
  31. 31.Are 45° and 38° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.What is the complement of 19° (in degrees)?
  33. 33.What is the supplement of 54° (in degrees)?
  34. 34.What is the complement of 24° (in degrees)?
  35. 35.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)?
  36. 36.What is the complement of 15° (in degrees)?
  37. 37.Are 68° and 22° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the supplement of 53° (in degrees)?

Answer key

  1. Supplementary
  2. 124
  3. 35
  4. 117
  5. Neither
  6. 20
  7. 138
  8. 6
  9. 137
  10. 54
  11. 46
  12. Complementary
  13. 41
  14. 77
  15. 71
  16. 35
  17. 68
  18. 48
  19. 76
  20. 156
  21. 15
  22. 48
  23. 94
  24. 78
  25. 34
  26. Neither
  27. 98
  28. Neither
  29. 128
  30. 136
  31. Neither
  32. 71
  33. 126
  34. 66
  35. 55
  36. 75
  37. Complementary
  38. 104
  39. 61
  40. 127

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