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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 632 · 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.Are 31° and 149° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  2. 2.What is the complement of 53° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 107°. What is the angle next to it on the same line (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its alternate interior angle (in degrees)?
  5. 5.What is the complement of 23° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 58°. What is its alternate interior angle (in degrees)?
  7. 7.What is the complement of 67° (in degrees)?
  8. 8.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  9. 9.Are 55° and 115° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  10. 10.What is the supplement of 91° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 82°. What is its alternate interior angle (in degrees)?
  12. 12.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)?
  13. 13.Are 57° and 123° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.What is the supplement of 30° (in degrees)?
  15. 15.Two angles are supplementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 51°. What is the angle next to it on the same line (in degrees)?
  17. 17.What is the complement of 61° (in degrees)?
  18. 18.What is the supplement of 158° (in degrees)?
  19. 19.What is the complement of 21° (in degrees)?
  20. 20.What is the supplement of 123° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 92°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its alternate interior angle (in degrees)?
  23. 23.Are 55° and 35° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.Two parallel lines are cut by a transversal. One angle is 148°. What is its corresponding angle (in degrees)?
  25. 25.Are 25° and 155° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  26. 26.What is the supplement of 41° (in degrees)?
  27. 27.Two angles are supplementary. One is 12° 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 114°. What is the angle next to it on the same line (in degrees)?
  29. 29.Are 74° and 50° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.What is the complement of 63° (in degrees)?
  31. 31.Are 49° and 88° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  32. 32.Two straight lines cross each other. One of the angles formed is 44°. What is the angle next to it on the same line (in degrees)?
  33. 33.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 98°. What is its alternate interior angle (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 54°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Are 30° and 60° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 31°. What is its alternate interior angle (in degrees)?
  38. 38.What is the supplement of 82° (in degrees)?
  39. 39.What is the supplement of 113° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 38°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. Supplementary
  2. 37
  3. 73
  4. 45
  5. 67
  6. 58
  7. 23
  8. 68
  9. Neither
  10. 89
  11. 82
  12. 143
  13. Supplementary
  14. 150
  15. 95
  16. 129
  17. 29
  18. 22
  19. 69
  20. 57
  21. 92
  22. 50
  23. Complementary
  24. 148
  25. Supplementary
  26. 139
  27. 96
  28. 66
  29. Neither
  30. 27
  31. Neither
  32. 136
  33. 80
  34. 98
  35. 54
  36. Complementary
  37. 31
  38. 98
  39. 67
  40. 142

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