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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 600 · 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 23°. What is the angle next to it on the same line (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 73°. What is its corresponding angle (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.What is the complement of 14° (in degrees)?
  5. 5.What is the complement of 10° (in degrees)?
  6. 6.What is the complement of 50° (in degrees)?
  7. 7.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  8. 8.Are 66° and 114° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  9. 9.What is the complement of 12° (in degrees)?
  10. 10.Are 80° and 100° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  11. 11.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 76°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 81°. What is its alternate interior angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One angle is 120°. What is its corresponding angle (in degrees)?
  16. 16.What is the complement of 79° (in degrees)?
  17. 17.Are 54° and 126° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  18. 18.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 104°. What is its corresponding angle (in degrees)?
  21. 21.What is the supplement of 110° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 66°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 127°. What is the angle next to it on the same line (in degrees)?
  24. 24.Are 19° and 161° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  25. 25.Two parallel lines are cut by a transversal. One angle is 98°. What is its corresponding angle (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 30°. What is its corresponding angle (in degrees)?
  27. 27.What is the supplement of 20° (in degrees)?
  28. 28.Are 28° and 152° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  29. 29.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 89°. What is its alternate interior angle (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 147°. What is its other interior angle on the same side of the transversal (in degrees)?
  32. 32.What is the complement of 70° (in degrees)?
  33. 33.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the supplement of 112° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 113°. What is the angle next to it on the same line (in degrees)?
  37. 37.What is the supplement of 21° (in degrees)?
  38. 38.What is the supplement of 115° (in degrees)?
  39. 39.What is the supplement of 73° (in degrees)?
  40. 40.What is the complement of 41° (in degrees)?

Answer key

  1. 157
  2. 73
  3. 57
  4. 76
  5. 80
  6. 40
  7. 65
  8. Supplementary
  9. 78
  10. Supplementary
  11. 128
  12. 104
  13. 81
  14. 32
  15. 120
  16. 11
  17. Supplementary
  18. 62
  19. 110
  20. 104
  21. 70
  22. 66
  23. 53
  24. Supplementary
  25. 98
  26. 30
  27. 160
  28. Supplementary
  29. 139
  30. 89
  31. 33
  32. 20
  33. 61
  34. 70
  35. 68
  36. 67
  37. 159
  38. 65
  39. 107
  40. 49

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