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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 748 · 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 13° (in degrees)?
  2. 2.What is the supplement of 51° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 145°. What is its corresponding angle (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 122°. What is its alternate interior angle (in degrees)?
  5. 5.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the complement of 54° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 128°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 71°. What is the angle vertically opposite to it (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 117°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two angles are supplementary. One is 100° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 118°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 106°. What is the angle next to it on the same line (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.What is the complement of 70° (in degrees)?
  18. 18.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  19. 19.What is the supplement of 11° (in degrees)?
  20. 20.What is the supplement of 77° (in degrees)?
  21. 21.What is the complement of 66° (in degrees)?
  22. 22.What is the complement of 67° (in degrees)?
  23. 23.Are 15° and 75° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.What is the supplement of 163° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 74°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.Are 58° and 122° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 116°. What is its alternate interior angle (in degrees)?
  28. 28.What is the supplement of 21° (in degrees)?
  29. 29.What is the supplement of 160° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  31. 31.Are 46° and 134° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  32. 32.Two straight lines cross each other. One of the angles formed is 37°. What is the angle vertically opposite to it (in degrees)?
  33. 33.What is the supplement of 5° (in degrees)?
  34. 34.What is the complement of 26° (in degrees)?
  35. 35.What is the complement of 50° (in degrees)?
  36. 36.Are 35° and 145° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  37. 37.Two angles are complementary. One is 4° 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 29°. What is the angle next to it on the same line (in degrees)?
  39. 39.What is the supplement of 135° (in degrees)?
  40. 40.What is the supplement of 156° (in degrees)?

Answer key

  1. 167
  2. 129
  3. 145
  4. 122
  5. 49
  6. 36
  7. 128
  8. 54
  9. 71
  10. 117
  11. 153
  12. 62
  13. 140
  14. 118
  15. 74
  16. 115
  17. 20
  18. 80
  19. 169
  20. 103
  21. 24
  22. 23
  23. Complementary
  24. 17
  25. 106
  26. Supplementary
  27. 116
  28. 159
  29. 20
  30. 128
  31. Supplementary
  32. 37
  33. 175
  34. 64
  35. 40
  36. Supplementary
  37. 47
  38. 151
  39. 45
  40. 24

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