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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 223 · 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 174° (in degrees)?
  2. 2.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 94°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.Two angles are supplementary. One is 134° more than the other. What is the bigger angle (in degrees)?
  5. 5.Are 63° and 27° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.What is the complement of 5° (in degrees)?
  8. 8.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  9. 9.Are 12° and 78° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  10. 10.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 46°. What is its corresponding angle (in degrees)?
  12. 12.Are 72° and 18° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 124°. What is its other interior angle on the same side of the transversal (in degrees)?
  14. 14.What is the complement of 24° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
  16. 16.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the complement of 20° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 102°. What is the angle next to it on the same line (in degrees)?
  19. 19.Are 45° and 135° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  20. 20.What is the complement of 84° (in degrees)?
  21. 21.What is the supplement of 132° (in degrees)?
  22. 22.What is the complement of 73° (in degrees)?
  23. 23.Are 35° and 145° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  25. 25.Are 18° and 21° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  26. 26.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the complement of 41° (in degrees)?
  28. 28.What is the complement of 57° (in degrees)?
  29. 29.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One angle is 91°. What is its corresponding angle (in degrees)?
  31. 31.What is the complement of 10° (in degrees)?
  32. 32.What is the supplement of 73° (in degrees)?
  33. 33.What is the complement of 17° (in degrees)?
  34. 34.What is the supplement of 41° (in degrees)?
  35. 35.Are 39° and 142° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.Two straight lines cross each other. One of the angles formed is 59°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 84°. What is the angle next to it on the same line (in degrees)?
  38. 38.What is the complement of 35° (in degrees)?
  39. 39.What is the supplement of 156° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 41°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 6
  2. 124
  3. 86
  4. 157
  5. Complementary
  6. 129
  7. 85
  8. 154
  9. Complementary
  10. 91
  11. 46
  12. Complementary
  13. 56
  14. 66
  15. 32
  16. 156
  17. 70
  18. 78
  19. Supplementary
  20. 6
  21. 48
  22. 17
  23. Supplementary
  24. 69
  25. Neither
  26. 130
  27. 49
  28. 33
  29. 65
  30. 91
  31. 80
  32. 107
  33. 73
  34. 139
  35. Neither
  36. 59
  37. 96
  38. 55
  39. 24
  40. 41

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