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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 117 · 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.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 52°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 159°. What is the angle next to it on the same line (in degrees)?
  5. 5.What is the complement of 63° (in degrees)?
  6. 6.What is the supplement of 49° (in degrees)?
  7. 7.What is the complement of 27° (in degrees)?
  8. 8.What is the complement of 16° (in degrees)?
  9. 9.Are 16° and 74° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  10. 10.Are 14° and 39° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  11. 11.What is the complement of 14° (in degrees)?
  12. 12.Two angles are supplementary. One is 76° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 53°. What is its corresponding angle (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 21°. What is the angle next to it on the same line (in degrees)?
  15. 15.Are 41° and 139° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  16. 16.Two angles are supplementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the supplement of 24° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 34°. What is the angle vertically opposite to it (in degrees)?
  19. 19.What is the complement of 13° (in degrees)?
  20. 20.What is the supplement of 63° (in degrees)?
  21. 21.What is the supplement of 51° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 48°. What is the angle next to it on the same line (in degrees)?
  23. 23.Are 72° and 108° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 97°. What is its alternate interior angle (in degrees)?
  25. 25.What is the supplement of 131° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 136°. What is its corresponding angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 55°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the complement of 49° (in degrees)?
  29. 29.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the complement of 46° (in degrees)?
  31. 31.What is the supplement of 84° (in degrees)?
  32. 32.What is the complement of 20° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 105°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Are 51° and 129° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 49°. What is its alternate interior angle (in degrees)?
  38. 38.What is the supplement of 58° (in degrees)?
  39. 39.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One angle is 125°. What is its corresponding angle (in degrees)?

Answer key

  1. 98
  2. 52
  3. 151
  4. 21
  5. 27
  6. 131
  7. 63
  8. 74
  9. Complementary
  10. Neither
  11. 76
  12. 128
  13. 53
  14. 159
  15. Supplementary
  16. 106
  17. 156
  18. 34
  19. 77
  20. 117
  21. 129
  22. 132
  23. Supplementary
  24. 97
  25. 49
  26. 136
  27. 55
  28. 41
  29. 65
  30. 44
  31. 96
  32. 70
  33. 105
  34. Supplementary
  35. 75
  36. 108
  37. 49
  38. 122
  39. 72
  40. 125

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