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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 908 · 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 140° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 129°. What is its corresponding angle (in degrees)?
  3. 3.What is the supplement of 155° (in degrees)?
  4. 4.Are 47° and 133° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 101°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Two angles are supplementary. One is 108° more than the other. What is the bigger angle (in degrees)?
  7. 7.Are 47° and 43° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  8. 8.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  9. 9.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the complement of 80° (in degrees)?
  11. 11.What is the supplement of 41° (in degrees)?
  12. 12.What is the complement of 7° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 54°. What is its other interior angle on the same side of the transversal (in degrees)?
  14. 14.What is the supplement of 58° (in degrees)?
  15. 15.What is the supplement of 91° (in degrees)?
  16. 16.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the supplement of 136° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 146°. What is the angle next to it on the same line (in degrees)?
  19. 19.Are 53° and 104° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  20. 20.What is the supplement of 172° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.Two angles are supplementary. One is 124° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its other interior angle on the same side of the transversal (in degrees)?
  24. 24.Are 32° and 94° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  25. 25.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  26. 26.Are 38° and 142° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  27. 27.What is the complement of 24° (in degrees)?
  28. 28.Are 53° and 65° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  29. 29.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  30. 30.Are 19° and 161° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its alternate interior angle (in degrees)?
  32. 32.Are 42° and 133° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  33. 33.What is the complement of 69° (in degrees)?
  34. 34.Are 61° and 119° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  35. 35.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 31°. What is its corresponding angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 54°. What is its corresponding angle (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 99°. What is its corresponding angle (in degrees)?
  39. 39.What is the complement of 23° (in degrees)?
  40. 40.What is the supplement of 164° (in degrees)?

Answer key

  1. 40
  2. 129
  3. 25
  4. Supplementary
  5. 79
  6. 144
  7. Complementary
  8. 79
  9. 80
  10. 10
  11. 139
  12. 83
  13. 126
  14. 122
  15. 89
  16. 72
  17. 44
  18. 34
  19. Neither
  20. 8
  21. 115
  22. 152
  23. 150
  24. Neither
  25. 159
  26. Supplementary
  27. 66
  28. Neither
  29. 52
  30. Supplementary
  31. 50
  32. Neither
  33. 21
  34. Supplementary
  35. 54
  36. 31
  37. 54
  38. 99
  39. 67
  40. 16

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