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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 191 · 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 26° (in degrees)?
  2. 2.What is the complement of 19° (in degrees)?
  3. 3.Are 54° and 5° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  4. 4.What is the supplement of 148° (in degrees)?
  5. 5.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the supplement of 86° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 127°. What is its alternate interior angle (in degrees)?
  8. 8.Are 29° and 151° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  9. 9.Two straight lines cross each other. One of the angles formed is 38°. What is the angle next to it on the same line (in degrees)?
  10. 10.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the supplement of 131° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 137°. What is its corresponding angle (in degrees)?
  13. 13.What is the complement of 64° (in degrees)?
  14. 14.What is the supplement of 84° (in degrees)?
  15. 15.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its alternate interior angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 106°. What is its corresponding angle (in degrees)?
  18. 18.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 50°. What is the angle next to it on the same line (in degrees)?
  20. 20.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  21. 21.Are 47° and 158° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.Are 54° and 61° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  23. 23.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the complement of 69° (in degrees)?
  26. 26.What is the supplement of 34° (in degrees)?
  27. 27.What is the supplement of 57° (in degrees)?
  28. 28.What is the complement of 18° (in degrees)?
  29. 29.What is the supplement of 44° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 131°. What is the angle next to it on the same line (in degrees)?
  31. 31.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)?
  32. 32.What is the supplement of 100° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Are 55° and 35° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.What is the complement of 10° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 77°. What is its corresponding angle (in degrees)?
  37. 37.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
  40. 40.What is the complement of 81° (in degrees)?

Answer key

  1. 64
  2. 71
  3. Neither
  4. 32
  5. 125
  6. 94
  7. 127
  8. Supplementary
  9. 142
  10. 71
  11. 49
  12. 137
  13. 26
  14. 96
  15. 57
  16. 30
  17. 106
  18. 159
  19. 130
  20. 111
  21. Neither
  22. Neither
  23. 135
  24. 56
  25. 21
  26. 146
  27. 123
  28. 72
  29. 136
  30. 49
  31. 147
  32. 80
  33. 147
  34. Complementary
  35. 80
  36. 77
  37. 139
  38. 154
  39. 68
  40. 9

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