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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 846 · 40 sums
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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 29° (in degrees)?
  2. 2.What is the complement of 43° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 78°. What is the angle next to it on the same line (in degrees)?
  4. 4.What is the supplement of 63° (in degrees)?
  5. 5.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  6. 6.Are 39° and 69° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  7. 7.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  8. 8.What is the supplement of 23° (in degrees)?
  9. 9.Are 41° and 49° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  10. 10.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the supplement of 5° (in degrees)?
  12. 12.What is the supplement of 75° (in degrees)?
  13. 13.Are 46° and 134° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  14. 14.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two angles are supplementary. One is 112° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 112°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the supplement of 137° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 79°. What is its other interior angle on the same side of the transversal (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 41°. What is the angle next to it on the same line (in degrees)?
  21. 21.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the complement of 33° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 79°. What is the angle next to it on the same line (in degrees)?
  24. 24.What is the supplement of 119° (in degrees)?
  25. 25.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the complement of 14° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 46°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the complement of 61° (in degrees)?
  29. 29.What is the complement of 5° (in degrees)?
  30. 30.What is the complement of 67° (in degrees)?
  31. 31.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the complement of 71° (in degrees)?
  33. 33.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the supplement of 159° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 67°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its alternate interior angle (in degrees)?
  37. 37.What is the complement of 52° (in degrees)?
  38. 38.What is the supplement of 32° (in degrees)?
  39. 39.What is the complement of 38° (in degrees)?
  40. 40.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 151
  2. 47
  3. 102
  4. 117
  5. 118
  6. Neither
  7. 46
  8. 157
  9. Complementary
  10. 79
  11. 175
  12. 105
  13. Supplementary
  14. 58
  15. 146
  16. 112
  17. 43
  18. 101
  19. 39
  20. 139
  21. 53
  22. 57
  23. 101
  24. 61
  25. 52
  26. 76
  27. 46
  28. 29
  29. 85
  30. 23
  31. 62
  32. 19
  33. 119
  34. 21
  35. 67
  36. 50
  37. 38
  38. 148
  39. 52
  40. 50

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