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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 342 · 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 straight lines cross each other. One of the angles formed is 92°. What is the angle next to it on the same line (in degrees)?
  2. 2.What is the supplement of 45° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 84°. What is the angle next to it on the same line (in degrees)?
  4. 4.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the supplement of 146° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 97°. What is its alternate interior angle (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 120°. What is its corresponding angle (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 31°. What is the angle next to it on the same line (in degrees)?
  9. 9.Are 65° and 115° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  10. 10.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the supplement of 67° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 124°. What is the angle next to it on the same line (in degrees)?
  13. 13.What is the supplement of 35° (in degrees)?
  14. 14.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 116°. What is its alternate interior angle (in degrees)?
  16. 16.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 115°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its alternate interior angle (in degrees)?
  19. 19.What is the complement of 84° (in degrees)?
  20. 20.Are 57° and 123° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  21. 21.Two straight lines cross each other. One of the angles formed is 126°. What is the angle next to it on the same line (in degrees)?
  22. 22.What is the supplement of 127° (in degrees)?
  23. 23.What is the supplement of 111° (in degrees)?
  24. 24.Are 28° and 76° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 35°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.What is the complement of 10° (in degrees)?
  27. 27.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two angles are supplementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the complement of 57° (in degrees)?
  30. 30.What is the complement of 50° (in degrees)?
  31. 31.What is the complement of 14° (in degrees)?
  32. 32.What is the complement of 37° (in degrees)?
  33. 33.Are 10° and 36° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.What is the supplement of 27° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 84°. What is its corresponding angle (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 91°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 149°. What is its corresponding angle (in degrees)?
  40. 40.What is the complement of 75° (in degrees)?

Answer key

  1. 88
  2. 135
  3. 96
  4. 52
  5. 34
  6. 97
  7. 120
  8. 149
  9. Supplementary
  10. 141
  11. 113
  12. 56
  13. 145
  14. 68
  15. 116
  16. 46
  17. 115
  18. 41
  19. 6
  20. Supplementary
  21. 54
  22. 53
  23. 69
  24. Neither
  25. 145
  26. 80
  27. 51
  28. 100
  29. 33
  30. 40
  31. 76
  32. 53
  33. Neither
  34. 153
  35. 86
  36. 84
  37. 91
  38. 29
  39. 149
  40. 15

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