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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 192 · 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.Two straight lines cross each other. One of the angles formed is 104°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 53°. What is its other interior angle on the same side of the transversal (in degrees)?
  3. 3.What is the supplement of 22° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 63°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Are 56° and 124° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.What is the complement of 82° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 160°. What is the angle vertically opposite to it (in degrees)?
  9. 9.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the supplement of 27° (in degrees)?
  11. 11.Are 56° and 34° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the supplement of 70° (in degrees)?
  14. 14.What is the supplement of 84° (in degrees)?
  15. 15.What is the complement of 55° (in degrees)?
  16. 16.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the supplement of 118° (in degrees)?
  18. 18.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)?
  19. 19.What is the complement of 39° (in degrees)?
  20. 20.Two angles are supplementary. One is 72° more than the other. What is the bigger angle (in degrees)?
  21. 21.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.Are 17° and 163° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  23. 23.Are 44° and 46° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  24. 24.What is the supplement of 121° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 126°. What is the angle next to it on the same line (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 116°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 31°. What is the angle next to it on the same line (in degrees)?
  29. 29.What is the complement of 49° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 73°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  32. 32.Are 35° and 145° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  33. 33.What is the complement of 22° (in degrees)?
  34. 34.What is the supplement of 132° (in degrees)?
  35. 35.What is the complement of 65° (in degrees)?
  36. 36.What is the supplement of 57° (in degrees)?
  37. 37.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the supplement of 46° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 76°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 104
  2. 127
  3. 158
  4. 117
  5. 143
  6. Supplementary
  7. 8
  8. 160
  9. 133
  10. 153
  11. Complementary
  12. 151
  13. 110
  14. 96
  15. 35
  16. 51
  17. 62
  18. 40
  19. 51
  20. 126
  21. Complementary
  22. Supplementary
  23. Complementary
  24. 59
  25. 54
  26. 64
  27. 46
  28. 149
  29. 41
  30. 73
  31. 80
  32. Supplementary
  33. 68
  34. 48
  35. 25
  36. 123
  37. 132
  38. 53
  39. 134
  40. 104

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