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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 739 · 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 47° and 133° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  2. 2.What is the supplement of 90° (in degrees)?
  3. 3.What is the supplement of 84° (in degrees)?
  4. 4.What is the complement of 35° (in degrees)?
  5. 5.What is the supplement of 134° (in degrees)?
  6. 6.What is the supplement of 11° (in degrees)?
  7. 7.Are 54° and 42° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  8. 8.What is the complement of 78° (in degrees)?
  9. 9.What is the supplement of 160° (in degrees)?
  10. 10.What is the complement of 8° (in degrees)?
  11. 11.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 86°. What is its corresponding angle (in degrees)?
  13. 13.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the complement of 12° (in degrees)?
  16. 16.What is the supplement of 30° (in degrees)?
  17. 17.What is the complement of 25° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 31°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the complement of 79° (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its alternate interior angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 58°. What is its corresponding angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 152°. What is the angle next to it on the same line (in degrees)?
  25. 25.What is the supplement of 98° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 42°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.What is the complement of 71° (in degrees)?
  28. 28.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)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 52°. What is its other interior angle on the same side of the transversal (in degrees)?
  30. 30.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its alternate interior angle (in degrees)?
  32. 32.What is the supplement of 82° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 29°. What is the angle next to it on the same line (in degrees)?
  34. 34.Are 76° and 104° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 80° and 64° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  38. 38.Two parallel lines are cut by a transversal. One angle is 102°. What is its corresponding angle (in degrees)?
  39. 39.What is the complement of 39° (in degrees)?
  40. 40.What is the complement of 66° (in degrees)?

Answer key

  1. Supplementary
  2. 90
  3. 96
  4. 55
  5. 46
  6. 169
  7. Neither
  8. 12
  9. 20
  10. 82
  11. 58
  12. 86
  13. 54
  14. 160
  15. 78
  16. 150
  17. 65
  18. 31
  19. 78
  20. 77
  21. 11
  22. 48
  23. 58
  24. 28
  25. 82
  26. 138
  27. 19
  28. 116
  29. 128
  30. 70
  31. 32
  32. 98
  33. 151
  34. Supplementary
  35. 46
  36. 64
  37. Neither
  38. 102
  39. 51
  40. 24

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