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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 958 · 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 41° (in degrees)?
  2. 2.What is the complement of 24° (in degrees)?
  3. 3.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)?
  4. 4.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 91°. What is its alternate interior angle (in degrees)?
  6. 6.What is the supplement of 162° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 95°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the supplement of 94° (in degrees)?
  9. 9.Are 41° and 49° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  10. 10.Two angles are supplementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 62°. What is its corresponding angle (in degrees)?
  12. 12.Are 37° and 53° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.What is the supplement of 91° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 118°. What is its corresponding angle (in degrees)?
  15. 15.What is the complement of 42° (in degrees)?
  16. 16.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the supplement of 48° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 106°. What is its corresponding angle (in degrees)?
  20. 20.What is the supplement of 9° (in degrees)?
  21. 21.What is the supplement of 60° (in degrees)?
  22. 22.What is the complement of 19° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 77°. What is its alternate interior angle (in degrees)?
  24. 24.What is the supplement of 144° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 36°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.What is the complement of 22° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 67°. What is its alternate interior angle (in degrees)?
  28. 28.What is the supplement of 58° (in degrees)?
  29. 29.What is the supplement of 126° (in degrees)?
  30. 30.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 113°. What is its alternate interior angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 127°. What is its corresponding angle (in degrees)?
  34. 34.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 97°. What is its other interior angle on the same side of the transversal (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 149°. What is the angle vertically opposite to it (in degrees)?
  37. 37.What is the complement of 9° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 73°. What is its corresponding angle (in degrees)?
  39. 39.What is the complement of 50° (in degrees)?
  40. 40.Are 17° and 163° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

Answer key

  1. 139
  2. 66
  3. 149
  4. 21
  5. 91
  6. 18
  7. 95
  8. 86
  9. Complementary
  10. 95
  11. 62
  12. Complementary
  13. 89
  14. 118
  15. 48
  16. 75
  17. 73
  18. 132
  19. 106
  20. 171
  21. 120
  22. 71
  23. 77
  24. 36
  25. 144
  26. 68
  27. 67
  28. 122
  29. 54
  30. 67
  31. 95
  32. 113
  33. 127
  34. 76
  35. 83
  36. 149
  37. 81
  38. 73
  39. 40
  40. Supplementary

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