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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 497 · 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 93° (in degrees)?
  2. 2.What is the complement of 44° (in degrees)?
  3. 3.What is the complement of 80° (in degrees)?
  4. 4.What is the supplement of 61° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 79°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  8. 8.Are 18° and 72° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  9. 9.Two angles are supplementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the complement of 61° (in degrees)?
  11. 11.What is the complement of 19° (in degrees)?
  12. 12.What is the complement of 18° (in degrees)?
  13. 13.What is the supplement of 64° (in degrees)?
  14. 14.What is the supplement of 159° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 28°. What is the angle next to it on the same line (in degrees)?
  16. 16.What is the complement of 12° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 113°. What is its corresponding angle (in degrees)?
  18. 18.What is the supplement of 175° (in degrees)?
  19. 19.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 61°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 49°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.What is the complement of 67° (in degrees)?
  23. 23.What is the supplement of 10° (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 119°. What is its alternate interior angle (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 132°. What is its corresponding angle (in degrees)?
  27. 27.What is the supplement of 43° (in degrees)?
  28. 28.What is the complement of 79° (in degrees)?
  29. 29.Are 44° and 51° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.Two straight lines cross each other. One of the angles formed is 61°. What is the angle next to it on the same line (in degrees)?
  31. 31.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the complement of 14° (in degrees)?
  33. 33.Two angles are supplementary. One is 28° 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 118°. What is its alternate interior angle (in degrees)?
  35. 35.Are 54° and 22° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  36. 36.Two straight lines cross each other. One of the angles formed is 90°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the complement of 37° (in degrees)?
  39. 39.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)?
  40. 40.What is the complement of 23° (in degrees)?

Answer key

  1. 87
  2. 46
  3. 10
  4. 119
  5. 101
  6. 65
  7. 63
  8. Complementary
  9. 106
  10. 29
  11. 71
  12. 72
  13. 116
  14. 21
  15. 152
  16. 78
  17. 113
  18. 5
  19. 151
  20. 61
  21. 131
  22. 23
  23. 170
  24. 130
  25. 119
  26. 132
  27. 137
  28. 11
  29. Neither
  30. 119
  31. 91
  32. 76
  33. 104
  34. 118
  35. Neither
  36. 90
  37. 51
  38. 53
  39. 96
  40. 67

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