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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 640 · 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 53°. What is the angle vertically opposite to it (in degrees)?
  2. 2.What is the supplement of 175° (in degrees)?
  3. 3.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the supplement of 91° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 78°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.What is the supplement of 37° (in degrees)?
  7. 7.What is the complement of 58° (in degrees)?
  8. 8.What is the supplement of 136° (in degrees)?
  9. 9.Are 39° and 51° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  10. 10.What is the complement of 85° (in degrees)?
  11. 11.What is the complement of 17° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 90°. What is its corresponding angle (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 92°. What is the angle next to it on the same line (in degrees)?
  14. 14.Are 49° and 131° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  15. 15.Two parallel lines are cut by a transversal. One angle is 93°. What is its corresponding angle (in degrees)?
  16. 16.What is the supplement of 26° (in degrees)?
  17. 17.What is the supplement of 46° (in degrees)?
  18. 18.What is the supplement of 92° (in degrees)?
  19. 19.What is the supplement of 50° (in degrees)?
  20. 20.What is the supplement of 133° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 69°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the supplement of 148° (in degrees)?
  24. 24.What is the complement of 19° (in degrees)?
  25. 25.What is the supplement of 154° (in degrees)?
  26. 26.Are 77° and 103° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.What is the complement of 34° (in degrees)?
  28. 28.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)?
  29. 29.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the supplement of 121° (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 137°. What is its alternate interior angle (in degrees)?
  32. 32.What is the supplement of 19° (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 124°. What is its corresponding angle (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 78°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the complement of 26° (in degrees)?
  36. 36.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 81°. What is its corresponding angle (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 128°. What is its corresponding angle (in degrees)?
  39. 39.What is the complement of 55° (in degrees)?
  40. 40.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 53
  2. 5
  3. 80
  4. 89
  5. 102
  6. 143
  7. 32
  8. 44
  9. Complementary
  10. 5
  11. 73
  12. 90
  13. 88
  14. Supplementary
  15. 93
  16. 154
  17. 134
  18. 88
  19. 130
  20. 47
  21. 111
  22. 132
  23. 32
  24. 71
  25. 26
  26. Supplementary
  27. 56
  28. 68
  29. 73
  30. 59
  31. 137
  32. 161
  33. 124
  34. 78
  35. 64
  36. 51
  37. 81
  38. 128
  39. 35
  40. 69

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