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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 97 · 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 complement of 10° (in degrees)?
  2. 2.What is the complement of 37° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 149°. What is its corresponding angle (in degrees)?
  4. 4.What is the supplement of 130° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 31°. What is its alternate interior angle (in degrees)?
  6. 6.Two angles are supplementary. One is 94° more than the other. What is the bigger angle (in degrees)?
  7. 7.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)?
  8. 8.What is the complement of 61° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 159°. What is the angle next to it on the same line (in degrees)?
  10. 10.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the supplement of 61° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 36°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Are 16° and 74° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  14. 14.Are 79° and 11° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  15. 15.What is the complement of 25° (in degrees)?
  16. 16.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  17. 17.Are 80° and 100° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its alternate interior angle (in degrees)?
  19. 19.What is the complement of 8° (in degrees)?
  20. 20.Are 70° and 110° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  21. 21.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the complement of 46° (in degrees)?
  23. 23.Are 61° and 29° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.What is the supplement of 97° (in degrees)?
  25. 25.What is the complement of 49° (in degrees)?
  26. 26.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the complement of 70° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 66°. What is the angle next to it on the same line (in degrees)?
  29. 29.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  31. 31.What is the complement of 41° (in degrees)?
  32. 32.What is the supplement of 104° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 156°. What is the angle vertically opposite to it (in degrees)?
  34. 34.What is the supplement of 43° (in degrees)?
  35. 35.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 30°. What is its corresponding angle (in degrees)?
  37. 37.What is the supplement of 59° (in degrees)?
  38. 38.What is the supplement of 7° (in degrees)?
  39. 39.What is the supplement of 68° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One angle is 136°. What is its corresponding angle (in degrees)?

Answer key

  1. 80
  2. 53
  3. 149
  4. 50
  5. 31
  6. 137
  7. 97
  8. 29
  9. 21
  10. 62
  11. 119
  12. 144
  13. Complementary
  14. Complementary
  15. 65
  16. 143
  17. Supplementary
  18. 51
  19. 82
  20. Supplementary
  21. 80
  22. 44
  23. Complementary
  24. 83
  25. 41
  26. 65
  27. 20
  28. 114
  29. 74
  30. 79
  31. 49
  32. 76
  33. 156
  34. 137
  35. 134
  36. 30
  37. 121
  38. 173
  39. 112
  40. 136

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