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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 347 · 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 36°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 121°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the complement of 34° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 120°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One angle is 106°. What is its corresponding angle (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 97°. What is the angle next to it on the same line (in degrees)?
  7. 7.What is the supplement of 58° (in degrees)?
  8. 8.What is the complement of 44° (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One angle is 133°. What is its corresponding angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 95°. What is its corresponding angle (in degrees)?
  11. 11.What is the supplement of 62° (in degrees)?
  12. 12.Are 72° and 44° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 100°. What is its alternate interior angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 135°. What is its corresponding angle (in degrees)?
  15. 15.What is the supplement of 89° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 94°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 70°. What is the angle next to it on the same line (in degrees)?
  18. 18.What is the complement of 37° (in degrees)?
  19. 19.Are 52° and 36° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  20. 20.What is the complement of 12° (in degrees)?
  21. 21.What is the complement of 41° (in degrees)?
  22. 22.What is the supplement of 149° (in degrees)?
  23. 23.What is the supplement of 165° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 94°. What is its corresponding angle (in degrees)?
  26. 26.What is the supplement of 63° (in degrees)?
  27. 27.Are 10° and 53° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its other interior angle on the same side of the transversal (in degrees)?
  29. 29.Are 13° and 50° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.What is the complement of 42° (in degrees)?
  31. 31.What is the supplement of 52° (in degrees)?
  32. 32.What is the supplement of 54° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
  34. 34.What is the supplement of 121° (in degrees)?
  35. 35.What is the complement of 58° (in degrees)?
  36. 36.What is the supplement of 104° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 53°. What is the angle next to it on the same line (in degrees)?
  38. 38.What is the complement of 60° (in degrees)?
  39. 39.What is the supplement of 113° (in degrees)?
  40. 40.Two angles are supplementary. One is 114° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 36
  2. 121
  3. 56
  4. 60
  5. 106
  6. 83
  7. 122
  8. 46
  9. 133
  10. 95
  11. 118
  12. Neither
  13. 100
  14. 135
  15. 91
  16. 94
  17. 110
  18. 53
  19. Neither
  20. 78
  21. 49
  22. 31
  23. 15
  24. 124
  25. 94
  26. 117
  27. Neither
  28. 135
  29. Neither
  30. 48
  31. 128
  32. 126
  33. 130
  34. 59
  35. 32
  36. 76
  37. 127
  38. 30
  39. 67
  40. 147

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