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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 333 · 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 167° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 79°. What is the angle next to it on the same line (in degrees)?
  3. 3.What is the complement of 68° (in degrees)?
  4. 4.Are 75° and 79° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  5. 5.What is the supplement of 19° (in degrees)?
  6. 6.Are 29° and 151° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  7. 7.Are 75° and 105° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  8. 8.What is the complement of 36° (in degrees)?
  9. 9.What is the supplement of 98° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 74°. What is the angle next to it on the same line (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 49°. What is its alternate interior angle (in degrees)?
  12. 12.Are 61° and 119° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  13. 13.Two parallel lines are cut by a transversal. One angle is 89°. What is its corresponding angle (in degrees)?
  14. 14.Are 12° and 168° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  15. 15.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the supplement of 126° (in degrees)?
  18. 18.What is the complement of 25° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its alternate interior angle (in degrees)?
  20. 20.What is the supplement of 20° (in degrees)?
  21. 21.Are 66° and 146° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.What is the complement of 66° (in degrees)?
  23. 23.Are 65° and 25° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  24. 24.What is the supplement of 142° (in degrees)?
  25. 25.What is the complement of 56° (in degrees)?
  26. 26.What is the complement of 67° (in degrees)?
  27. 27.What is the supplement of 40° (in degrees)?
  28. 28.Are 40° and 126° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  29. 29.Two straight lines cross each other. One of the angles formed is 98°. What is the angle next to it on the same line (in degrees)?
  30. 30.What is the supplement of 82° (in degrees)?
  31. 31.What is the supplement of 54° (in degrees)?
  32. 32.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  33. 33.Are 64° and 26° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  34. 34.What is the complement of 46° (in degrees)?
  35. 35.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  36. 36.Are 67° and 12° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 71°. What is its alternate interior angle (in degrees)?
  38. 38.Are 70° and 110° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  39. 39.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 32° and 148° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary

Answer key

  1. 13
  2. 101
  3. 22
  4. Neither
  5. 161
  6. Supplementary
  7. Supplementary
  8. 54
  9. 82
  10. 106
  11. 49
  12. Supplementary
  13. 89
  14. Supplementary
  15. 55
  16. 62
  17. 54
  18. 65
  19. 56
  20. 160
  21. Neither
  22. 24
  23. Complementary
  24. 38
  25. 34
  26. 23
  27. 140
  28. Neither
  29. 82
  30. 98
  31. 126
  32. 67
  33. Complementary
  34. 44
  35. 53
  36. Neither
  37. 71
  38. Supplementary
  39. 63
  40. Supplementary

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