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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 790 · 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.Are 80° and 130° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  2. 2.What is the complement of 44° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 147°. What is its corresponding angle (in degrees)?
  4. 4.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  5. 5.Are 67° and 23° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  6. 6.Two straight lines cross each other. One of the angles formed is 43°. What is the angle next to it on the same line (in degrees)?
  7. 7.What is the supplement of 19° (in degrees)?
  8. 8.Two angles are supplementary. One is 100° more than the other. What is the bigger angle (in degrees)?
  9. 9.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the complement of 26° (in degrees)?
  11. 11.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the complement of 84° (in degrees)?
  13. 13.What is the supplement of 98° (in degrees)?
  14. 14.What is the supplement of 21° (in degrees)?
  15. 15.What is the supplement of 81° (in degrees)?
  16. 16.What is the supplement of 107° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its alternate interior angle (in degrees)?
  18. 18.Two angles are supplementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  19. 19.What is the complement of 13° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 32°. What is the angle next to it on the same line (in degrees)?
  21. 21.What is the supplement of 62° (in degrees)?
  22. 22.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 25°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Are 67° and 113° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  25. 25.What is the complement of 9° (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 97°. What is the angle vertically opposite to it (in degrees)?
  27. 27.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 20°. What is the angle next to it on the same line (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 77°. What is the angle next to it on the same line (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 107°. What is its alternate interior angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 70°. What is the angle next to it on the same line (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 103°. What is its alternate interior angle (in degrees)?
  34. 34.Are 80° and 10° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 29° and 61° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.What is the complement of 64° (in degrees)?
  39. 39.What is the supplement of 141° (in degrees)?
  40. 40.What is the complement of 80° (in degrees)?

Answer key

  1. Neither
  2. 46
  3. 147
  4. 58
  5. Complementary
  6. 137
  7. 161
  8. 140
  9. 62
  10. 64
  11. 59
  12. 6
  13. 82
  14. 159
  15. 99
  16. 73
  17. 30
  18. 101
  19. 77
  20. 148
  21. 118
  22. 55
  23. 25
  24. Supplementary
  25. 81
  26. 97
  27. 49
  28. 46
  29. 160
  30. 103
  31. 107
  32. 110
  33. 103
  34. Complementary
  35. 92
  36. 52
  37. Complementary
  38. 26
  39. 39
  40. 10

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