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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 680 · 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 139° (in degrees)?
  2. 2.Are 37° and 53° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  3. 3.Two angles are supplementary. One is 110° 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 150°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the supplement of 70° (in degrees)?
  8. 8.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  9. 9.Are 30° and 59° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  10. 10.Two parallel lines are cut by a transversal. One angle is 143°. What is its corresponding angle (in degrees)?
  11. 11.Are 36° and 133° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  12. 12.What is the complement of 59° (in degrees)?
  13. 13.What is the complement of 7° (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 140°. What is the angle next to it on the same line (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 108°. What is its alternate interior angle (in degrees)?
  16. 16.What is the complement of 62° (in degrees)?
  17. 17.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the complement of 82° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 46°. What is the angle next to it on the same line (in degrees)?
  20. 20.What is the complement of 5° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 71°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the supplement of 99° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 137°. What is the angle next to it on the same line (in degrees)?
  25. 25.What is the complement of 50° (in degrees)?
  26. 26.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  27. 27.Are 27° and 153° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 57°. What is its other interior angle on the same side of the transversal (in degrees)?
  29. 29.Are 48° and 132° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  30. 30.Are 49° and 131° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  31. 31.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  33. 33.What is the complement of 74° (in degrees)?
  34. 34.What is the complement of 23° (in degrees)?
  35. 35.What is the complement of 24° (in degrees)?
  36. 36.Are 79° and 11° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  37. 37.Two angles are supplementary. One is 82° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 136°. What is its corresponding angle (in degrees)?
  39. 39.What is the complement of 9° (in degrees)?
  40. 40.Are 25° and 9° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary

Answer key

  1. 41
  2. Complementary
  3. 145
  4. 30
  5. 54
  6. 62
  7. 110
  8. 120
  9. Neither
  10. 143
  11. Neither
  12. 31
  13. 83
  14. 40
  15. 108
  16. 28
  17. 71
  18. 8
  19. 134
  20. 85
  21. 71
  22. 91
  23. 81
  24. 43
  25. 40
  26. 107
  27. Supplementary
  28. 123
  29. Supplementary
  30. Supplementary
  31. 72
  32. 159
  33. 16
  34. 67
  35. 66
  36. Complementary
  37. 131
  38. 136
  39. 81
  40. Neither

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