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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 393 · 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 47° (in degrees)?
  2. 2.What is the supplement of 78° (in degrees)?
  3. 3.What is the supplement of 67° (in degrees)?
  4. 4.What is the supplement of 32° (in degrees)?
  5. 5.What is the complement of 44° (in degrees)?
  6. 6.Are 12° and 78° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  7. 7.Two parallel lines are cut by a transversal. One angle is 124°. What is its corresponding angle (in degrees)?
  8. 8.What is the supplement of 5° (in degrees)?
  9. 9.Are 66° and 71° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  10. 10.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 121°. What is its other interior angle on the same side of the transversal (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 137°. What is the angle vertically opposite to it (in degrees)?
  13. 13.What is the complement of 42° (in degrees)?
  14. 14.What is the supplement of 115° (in degrees)?
  15. 15.What is the complement of 67° (in degrees)?
  16. 16.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 83°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its alternate interior angle (in degrees)?
  19. 19.What is the supplement of 169° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 75°. What is the angle next to it on the same line (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
  22. 22.What is the complement of 26° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 62°. What is its alternate interior angle (in degrees)?
  24. 24.What is the complement of 52° (in degrees)?
  25. 25.What is the supplement of 43° (in degrees)?
  26. 26.Are 55° and 26° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  27. 27.What is the supplement of 71° (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 97°. What is its corresponding angle (in degrees)?
  29. 29.Two angles are complementary. One is 4° 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 147°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.Are 78° and 115° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.Are 44° and 129° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 104°. What is its alternate interior angle (in degrees)?
  34. 34.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the supplement of 93° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 73°. What is its corresponding angle (in degrees)?
  37. 37.What is the complement of 70° (in degrees)?
  38. 38.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the complement of 23° (in degrees)?
  40. 40.What is the complement of 51° (in degrees)?

Answer key

  1. 133
  2. 102
  3. 113
  4. 148
  5. 46
  6. Complementary
  7. 124
  8. 175
  9. Neither
  10. 46
  11. 59
  12. 137
  13. 48
  14. 65
  15. 23
  16. 48
  17. 97
  18. 106
  19. 11
  20. 105
  21. 32
  22. 64
  23. 62
  24. 38
  25. 137
  26. Neither
  27. 109
  28. 97
  29. 47
  30. 33
  31. Neither
  32. Neither
  33. 104
  34. 53
  35. 87
  36. 73
  37. 20
  38. 93
  39. 67
  40. 39

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