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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 860 · 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 139° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 33°. What is its other interior angle on the same side of the transversal (in degrees)?
  3. 3.What is the supplement of 146° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 131°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Are 77° and 13° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.What is the supplement of 16° (in degrees)?
  8. 8.Are 56° and 20° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  9. 9.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 57°. What is its corresponding angle (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 103°. What is its corresponding angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
  13. 13.What is the complement of 14° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 48°. What is its corresponding angle (in degrees)?
  15. 15.What is the complement of 64° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 94°. What is its alternate interior angle (in degrees)?
  17. 17.What is the supplement of 98° (in degrees)?
  18. 18.What is the supplement of 90° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 58°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.What is the complement of 66° (in degrees)?
  21. 21.What is the complement of 19° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 142°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 66°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 43°. What is its corresponding angle (in degrees)?
  26. 26.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 37°. What is the angle next to it on the same line (in degrees)?
  28. 28.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)?
  29. 29.Two straight lines cross each other. One of the angles formed is 40°. 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 113°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 57°. What is the angle vertically opposite to it (in degrees)?
  32. 32.What is the complement of 9° (in degrees)?
  33. 33.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  35. 35.Are 64° and 116° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.Two angles are supplementary. One is 104° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the supplement of 60° (in degrees)?
  38. 38.Are 28° and 152° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  39. 39.What is the complement of 49° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?

Answer key

  1. 41
  2. 147
  3. 34
  4. 49
  5. Complementary
  6. 74
  7. 164
  8. Neither
  9. 135
  10. 57
  11. 103
  12. 155
  13. 76
  14. 48
  15. 26
  16. 94
  17. 82
  18. 90
  19. 122
  20. 24
  21. 71
  22. 38
  23. 66
  24. 110
  25. 43
  26. 54
  27. 143
  28. 157
  29. 140
  30. 113
  31. 57
  32. 81
  33. 50
  34. 69
  35. Supplementary
  36. 142
  37. 120
  38. Supplementary
  39. 41
  40. 32

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