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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 36 · 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 101°. What is its corresponding angle (in degrees)?
  2. 2.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  3. 3.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 62°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One angle is 33°. What is its corresponding angle (in degrees)?
  6. 6.What is the complement of 71° (in degrees)?
  7. 7.Are 23° and 67° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  8. 8.Two parallel lines are cut by a transversal. One angle is 140°. What is its corresponding angle (in degrees)?
  9. 9.What is the complement of 73° (in degrees)?
  10. 10.Are 28° and 89° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  11. 11.What is the supplement of 124° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 136°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  14. 14.Are 72° and 18° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  15. 15.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 65°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the supplement of 65° (in degrees)?
  18. 18.Are 50° and 115° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.What is the supplement of 8° (in degrees)?
  20. 20.What is the supplement of 64° (in degrees)?
  21. 21.What is the complement of 43° (in degrees)?
  22. 22.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the complement of 83° (in degrees)?
  25. 25.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 141° (in degrees)?
  27. 27.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  28. 28.Are 31° and 63° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  29. 29.Two parallel lines are cut by a transversal. One angle is 107°. What is its corresponding angle (in degrees)?
  30. 30.What is the complement of 61° (in degrees)?
  31. 31.Are 17° and 163° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 143°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.What is the supplement of 104° (in degrees)?
  34. 34.Are 69° and 111° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.What is the supplement of 94° (in degrees)?
  36. 36.What is the complement of 21° (in degrees)?
  37. 37.What is the complement of 57° (in degrees)?
  38. 38.Are 58° and 32° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  39. 39.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the complement of 70° (in degrees)?

Answer key

  1. 101
  2. 54
  3. 139
  4. 118
  5. 33
  6. 19
  7. Complementary
  8. 140
  9. 17
  10. Neither
  11. 56
  12. 44
  13. 98
  14. Complementary
  15. 135
  16. 65
  17. 115
  18. Neither
  19. 172
  20. 116
  21. 47
  22. 143
  23. 58
  24. 7
  25. 67
  26. 39
  27. 48
  28. Neither
  29. 107
  30. 29
  31. Supplementary
  32. 37
  33. 76
  34. Supplementary
  35. 86
  36. 69
  37. 33
  38. Complementary
  39. 117
  40. 20

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