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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 139 · 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.Are 41° and 139° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  2. 2.What is the complement of 81° (in degrees)?
  3. 3.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 117°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Are 23° and 67° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  6. 6.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the complement of 85° (in degrees)?
  10. 10.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the complement of 21° (in degrees)?
  12. 12.Are 15° and 165° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.What is the supplement of 129° (in degrees)?
  14. 14.Are 63° and 27° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  15. 15.Two parallel lines are cut by a transversal. One angle is 34°. What is its corresponding angle (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 37°. What is the angle next to it on the same line (in degrees)?
  17. 17.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
  19. 19.Are 39° and 141° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.What is the supplement of 53° (in degrees)?
  21. 21.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
  24. 24.What is the complement of 38° (in degrees)?
  25. 25.Two angles are supplementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  26. 26.Are 60° and 55° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.Two straight lines cross each other. One of the angles formed is 133°. What is the angle next to it on the same line (in degrees)?
  28. 28.What is the complement of 41° (in degrees)?
  29. 29.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the supplement of 170° (in degrees)?
  31. 31.What is the supplement of 39° (in degrees)?
  32. 32.What is the supplement of 71° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 51°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Are 29° and 61° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  35. 35.What is the supplement of 12° (in degrees)?
  36. 36.What is the supplement of 128° (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 109°. What is its corresponding angle (in degrees)?
  38. 38.What is the complement of 9° (in degrees)?
  39. 39.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 27° and 10° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary

Answer key

  1. Supplementary
  2. 9
  3. 67
  4. 117
  5. Complementary
  6. 68
  7. 29
  8. 65
  9. 5
  10. 52
  11. 69
  12. Supplementary
  13. 51
  14. Complementary
  15. 34
  16. 143
  17. 111
  18. 68
  19. Supplementary
  20. 127
  21. Complementary
  22. 48
  23. 155
  24. 52
  25. 113
  26. Neither
  27. 47
  28. 49
  29. 49
  30. 10
  31. 141
  32. 109
  33. 51
  34. Complementary
  35. 168
  36. 52
  37. 109
  38. 81
  39. 96
  40. Neither

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