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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 404 · 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 53° (in degrees)?
  2. 2.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  3. 3.Are 20° and 160° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  4. 4.What is the supplement of 17° (in degrees)?
  5. 5.What is the supplement of 7° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.Are 40° and 140° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.Two straight lines cross each other. One of the angles formed is 68°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the supplement of 68° (in degrees)?
  10. 10.Are 53° and 127° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 124°. What is its alternate interior angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 105°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 89°. What is its corresponding angle (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 47°. What is its other interior angle on the same side of the transversal (in degrees)?
  16. 16.What is the complement of 25° (in degrees)?
  17. 17.What is the supplement of 129° (in degrees)?
  18. 18.Are 24° and 37° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  19. 19.What is the supplement of 49° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 91°. What is the angle next to it on the same line (in degrees)?
  21. 21.What is the complement of 16° (in degrees)?
  22. 22.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the supplement of 150° (in degrees)?
  24. 24.What is the supplement of 168° (in degrees)?
  25. 25.Are 20° and 70° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  26. 26.What is the supplement of 37° (in degrees)?
  27. 27.What is the complement of 27° (in degrees)?
  28. 28.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the supplement of 48° (in degrees)?
  30. 30.What is the complement of 54° (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 64°. What is its other interior angle on the same side of the transversal (in degrees)?
  32. 32.What is the supplement of 20° (in degrees)?
  33. 33.What is the supplement of 59° (in degrees)?
  34. 34.Are 24° and 5° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.What is the complement of 79° (in degrees)?
  36. 36.Are 79° and 15° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.Are 49° and 131° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.What is the complement of 11° (in degrees)?
  39. 39.What is the supplement of 9° (in degrees)?
  40. 40.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 127
  2. 104
  3. Supplementary
  4. 163
  5. 173
  6. 57
  7. Supplementary
  8. 68
  9. 112
  10. Supplementary
  11. 124
  12. 105
  13. 111
  14. 89
  15. 133
  16. 65
  17. 51
  18. Neither
  19. 131
  20. 89
  21. 74
  22. 46
  23. 30
  24. 12
  25. Complementary
  26. 143
  27. 63
  28. 153
  29. 132
  30. 36
  31. 116
  32. 160
  33. 121
  34. Neither
  35. 11
  36. Neither
  37. Supplementary
  38. 79
  39. 171
  40. 69

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