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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 987 · 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 147° (in degrees)?
  2. 2.Are 50° and 40° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  3. 3.Two straight lines cross each other. One of the angles formed is 138°. What is the angle next to it on the same line (in degrees)?
  4. 4.What is the complement of 55° (in degrees)?
  5. 5.Two angles are supplementary. One is 130° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 106°. What is its corresponding angle (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 61°. What is its corresponding angle (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 126°. What is its alternate interior angle (in degrees)?
  9. 9.What is the supplement of 86° (in degrees)?
  10. 10.What is the complement of 42° (in degrees)?
  11. 11.What is the complement of 79° (in degrees)?
  12. 12.What is the supplement of 46° (in degrees)?
  13. 13.What is the complement of 10° (in degrees)?
  14. 14.What is the complement of 9° (in degrees)?
  15. 15.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the complement of 54° (in degrees)?
  17. 17.Are 77° and 43° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  18. 18.Two straight lines cross each other. One of the angles formed is 97°. What is the angle next to it on the same line (in degrees)?
  19. 19.What is the complement of 65° (in degrees)?
  20. 20.What is the supplement of 24° (in degrees)?
  21. 21.What is the complement of 29° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 116°. What is the angle next to it on the same line (in degrees)?
  23. 23.What is the supplement of 44° (in degrees)?
  24. 24.What is the supplement of 7° (in degrees)?
  25. 25.What is the complement of 68° (in degrees)?
  26. 26.What is the complement of 39° (in degrees)?
  27. 27.Are 40° and 49° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  28. 28.Two straight lines cross each other. One of the angles formed is 130°. What is the angle next to it on the same line (in degrees)?
  29. 29.Are 33° and 53° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  30. 30.Two parallel lines are cut by a transversal. One angle is 144°. What is its corresponding angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 86°. What is the angle next to it on the same line (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its alternate interior angle (in degrees)?
  33. 33.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 129°. What is its corresponding angle (in degrees)?
  35. 35.What is the complement of 14° (in degrees)?
  36. 36.Are 63° and 8° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  37. 37.Two straight lines cross each other. One of the angles formed is 116°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 133°. What is its alternate interior angle (in degrees)?
  39. 39.What is the complement of 73° (in degrees)?
  40. 40.Are 70° and 20° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. 33
  2. Complementary
  3. 42
  4. 35
  5. 155
  6. 106
  7. 61
  8. 126
  9. 94
  10. 48
  11. 11
  12. 134
  13. 80
  14. 81
  15. 136
  16. 36
  17. Neither
  18. 83
  19. 25
  20. 156
  21. 61
  22. 64
  23. 136
  24. 173
  25. 22
  26. 51
  27. Neither
  28. 50
  29. Neither
  30. 144
  31. 94
  32. 106
  33. 119
  34. 129
  35. 76
  36. Neither
  37. 116
  38. 133
  39. 17
  40. Complementary

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