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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 68 · 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 151° (in degrees)?
  2. 2.Are 57° and 123° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  3. 3.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  4. 4.Are 39° and 51° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  5. 5.What is the supplement of 14° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 46°. What is its corresponding angle (in degrees)?
  7. 7.What is the supplement of 55° (in degrees)?
  8. 8.Are 65° and 25° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.Two angles are supplementary. One is 76° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the supplement of 29° (in degrees)?
  11. 11.What is the supplement of 84° (in degrees)?
  12. 12.What is the complement of 55° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 32°. What is the angle next to it on the same line (in degrees)?
  14. 14.Are 52° and 128° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  15. 15.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 73°. What is its alternate interior angle (in degrees)?
  17. 17.What is the supplement of 160° (in degrees)?
  18. 18.What is the supplement of 115° (in degrees)?
  19. 19.What is the complement of 28° (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 50°. What is its corresponding angle (in degrees)?
  21. 21.What is the supplement of 53° (in degrees)?
  22. 22.What is the complement of 70° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 47°. What is its alternate interior angle (in degrees)?
  24. 24.What is the complement of 44° (in degrees)?
  25. 25.Are 56° and 85° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  26. 26.Two parallel lines are cut by a transversal. One angle is 60°. What is its corresponding angle (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 82°. What is its alternate interior angle (in degrees)?
  28. 28.What is the supplement of 168° (in degrees)?
  29. 29.Are 15° and 75° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  30. 30.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 91°. What is its corresponding angle (in degrees)?
  32. 32.What is the supplement of 66° (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 137°. What is its corresponding angle (in degrees)?
  34. 34.What is the supplement of 81° (in degrees)?
  35. 35.What is the complement of 9° (in degrees)?
  36. 36.Are 55° and 35° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.What is the complement of 36° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 108°. What is its other interior angle on the same side of the transversal (in degrees)?
  39. 39.Are 69° and 21° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  40. 40.What is the supplement of 57° (in degrees)?

Answer key

  1. 29
  2. Supplementary
  3. 124
  4. Complementary
  5. 166
  6. 46
  7. 125
  8. Complementary
  9. 128
  10. 151
  11. 96
  12. 35
  13. 148
  14. Supplementary
  15. 61
  16. 73
  17. 20
  18. 65
  19. 62
  20. 50
  21. 127
  22. 20
  23. 47
  24. 46
  25. Neither
  26. 60
  27. 82
  28. 12
  29. Complementary
  30. 72
  31. 91
  32. 114
  33. 137
  34. 99
  35. 81
  36. Complementary
  37. 54
  38. 72
  39. Complementary
  40. 123

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