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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 726 · 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 125°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Are 38° and 142° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 57°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the supplement of 162° (in degrees)?
  6. 6.What is the complement of 7° (in degrees)?
  7. 7.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  8. 8.What is the complement of 50° (in degrees)?
  9. 9.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 48°. What is the angle vertically opposite to it (in degrees)?
  12. 12.What is the supplement of 159° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 115°. What is the angle next to it on the same line (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 88°. What is its alternate interior angle (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 35°. What is its corresponding angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 94°. What is the angle next to it on the same line (in degrees)?
  18. 18.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 90°. What is its corresponding angle (in degrees)?
  21. 21.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two angles are supplementary. One is 94° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the supplement of 44° (in degrees)?
  24. 24.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  25. 25.Are 41° and 139° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  26. 26.What is the supplement of 19° (in degrees)?
  27. 27.What is the supplement of 88° (in degrees)?
  28. 28.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 132°. What is the angle next to it on the same line (in degrees)?
  30. 30.What is the supplement of 170° (in degrees)?
  31. 31.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the complement of 22° (in degrees)?
  33. 33.What is the supplement of 103° (in degrees)?
  34. 34.Are 30° and 161° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  35. 35.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  36. 36.Are 20° and 160° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.What is the supplement of 46° (in degrees)?
  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 supplement of 40° (in degrees)?
  40. 40.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 125
  2. Supplementary
  3. 123
  4. 50
  5. 18
  6. 83
  7. 68
  8. 40
  9. 98
  10. 51
  11. 48
  12. 21
  13. 65
  14. 32
  15. 88
  16. 35
  17. 86
  18. 52
  19. 68
  20. 90
  21. 111
  22. 137
  23. 136
  24. 118
  25. Supplementary
  26. 161
  27. 92
  28. 125
  29. 48
  30. 10
  31. 55
  32. 68
  33. 77
  34. Neither
  35. 70
  36. Supplementary
  37. 134
  38. 102
  39. 140
  40. 136

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