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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 244 · 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 complement of 11° (in degrees)?
  2. 2.Two angles are supplementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  3. 3.What is the supplement of 97° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 102°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two angles are supplementary. One is 90° 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 149°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the complement of 72° (in degrees)?
  9. 9.What is the supplement of 40° (in degrees)?
  10. 10.What is the complement of 39° (in degrees)?
  11. 11.What is the complement of 57° (in degrees)?
  12. 12.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 31°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 75°. What is the angle vertically opposite to it (in degrees)?
  15. 15.What is the complement of 52° (in degrees)?
  16. 16.What is the complement of 14° (in degrees)?
  17. 17.Two angles are supplementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  19. 19.Are 55° and 125° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  20. 20.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Are 20° and 70° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  22. 22.Two straight lines cross each other. One of the angles formed is 22°. What is the angle next to it on the same line (in degrees)?
  23. 23.What is the supplement of 48° (in degrees)?
  24. 24.What is the supplement of 118° (in degrees)?
  25. 25.Are 47° and 43° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  26. 26.Two parallel lines are cut by a transversal. One angle is 114°. What is its corresponding angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 98°. What is the angle next to it on the same line (in degrees)?
  28. 28.What is the supplement of 117° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 64°. What is its other interior angle on the same side of the transversal (in degrees)?
  30. 30.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  32. 32.Are 13° and 167° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  33. 33.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 141°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Are 27° and 63° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  36. 36.Are 79° and 101° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  37. 37.Two straight lines cross each other. One of the angles formed is 96°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 62° and 28° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary

Answer key

  1. 79
  2. 116
  3. 83
  4. 102
  5. 132
  6. 135
  7. 149
  8. 18
  9. 140
  10. 51
  11. 33
  12. 57
  13. 31
  14. 75
  15. 38
  16. 76
  17. 123
  18. 62
  19. Supplementary
  20. 139
  21. Complementary
  22. 158
  23. 132
  24. 62
  25. Complementary
  26. 114
  27. 82
  28. 63
  29. 116
  30. 98
  31. 118
  32. Supplementary
  33. 114
  34. 141
  35. Complementary
  36. Supplementary
  37. 84
  38. 103
  39. 125
  40. Complementary

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