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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 358 · 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 71° (in degrees)?
  2. 2.What is the complement of 80° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 156°. What is the angle next to it on the same line (in degrees)?
  4. 4.Are 42° and 47° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.Are 66° and 24° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  6. 6.What is the complement of 83° (in degrees)?
  7. 7.What is the supplement of 100° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 98°. What is the angle vertically opposite to it (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 57°. What is the angle vertically opposite to it (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 144°. What is its corresponding angle (in degrees)?
  11. 11.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the supplement of 29° (in degrees)?
  13. 13.Are 70° and 20° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  14. 14.Two straight lines cross each other. One of the angles formed is 37°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 80°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 136°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 84°. What is the angle next to it on the same line (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 72°. What is the angle next to it on the same line (in degrees)?
  19. 19.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 99°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.What is the supplement of 46° (in degrees)?
  22. 22.What is the supplement of 142° (in degrees)?
  23. 23.Are 53° and 49° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  24. 24.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the complement of 36° (in degrees)?
  26. 26.What is the complement of 73° (in degrees)?
  27. 27.What is the complement of 63° (in degrees)?
  28. 28.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the complement of 81° (in degrees)?
  30. 30.What is the supplement of 115° (in degrees)?
  31. 31.Are 71° and 19° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  32. 32.Two parallel lines are cut by a transversal. One angle is 102°. What is its corresponding angle (in degrees)?
  33. 33.Are 70° and 64° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  34. 34.Two straight lines cross each other. One of the angles formed is 106°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the supplement of 84° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 47°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the supplement of 146° (in degrees)?
  40. 40.Are 52° and 9° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary

Answer key

  1. 109
  2. 10
  3. 24
  4. Neither
  5. Complementary
  6. 7
  7. 80
  8. 98
  9. 57
  10. 144
  11. 125
  12. 151
  13. Complementary
  14. 37
  15. 80
  16. 44
  17. 96
  18. 108
  19. 139
  20. 81
  21. 134
  22. 38
  23. Neither
  24. 143
  25. 54
  26. 17
  27. 27
  28. 69
  29. 9
  30. 65
  31. Complementary
  32. 102
  33. Neither
  34. 106
  35. 96
  36. 133
  37. 62
  38. 124
  39. 34
  40. Neither

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