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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 725 · 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.Two parallel lines are cut by a transversal. One angle is 84°. What is its corresponding angle (in degrees)?
  2. 2.What is the complement of 64° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 81°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One angle is 141°. What is its corresponding angle (in degrees)?
  5. 5.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the complement of 5° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the supplement of 38° (in degrees)?
  9. 9.Are 18° and 145° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  10. 10.What is the complement of 78° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 130°. What is the angle next to it on the same line (in degrees)?
  12. 12.What is the complement of 51° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 117°. What is its alternate interior angle (in degrees)?
  14. 14.Are 31° and 57° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its other interior angle on the same side of the transversal (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 80°. What is its alternate interior angle (in degrees)?
  17. 17.What is the supplement of 9° (in degrees)?
  18. 18.Are 73° and 107° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.Two parallel lines are cut by a transversal. One angle is 118°. What is its corresponding angle (in degrees)?
  20. 20.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its alternate interior angle (in degrees)?
  22. 22.Are 42° and 138° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  23. 23.Two straight lines cross each other. One of the angles formed is 135°. What is the angle next to it on the same line (in degrees)?
  24. 24.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 47° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 31°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.Are 66° and 24° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  28. 28.What is the complement of 19° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 111°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 83°. What is its corresponding angle (in degrees)?
  32. 32.What is the complement of 74° (in degrees)?
  33. 33.What is the supplement of 111° (in degrees)?
  34. 34.What is the supplement of 40° (in degrees)?
  35. 35.What is the complement of 16° (in degrees)?
  36. 36.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the complement of 22° (in degrees)?
  39. 39.What is the supplement of 96° (in degrees)?
  40. 40.What is the supplement of 84° (in degrees)?

Answer key

  1. 84
  2. 26
  3. 81
  4. 141
  5. 76
  6. 85
  7. 130
  8. 142
  9. Neither
  10. 12
  11. 50
  12. 39
  13. 117
  14. Neither
  15. 74
  16. 80
  17. 171
  18. Supplementary
  19. 118
  20. 119
  21. 106
  22. Supplementary
  23. 45
  24. 72
  25. 133
  26. 149
  27. Complementary
  28. 71
  29. 111
  30. 75
  31. 83
  32. 16
  33. 69
  34. 140
  35. 74
  36. 103
  37. 61
  38. 68
  39. 84
  40. 96

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