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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 678 · 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 9° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its alternate interior angle (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 116°. What is the angle next to it on the same line (in degrees)?
  4. 4.Are 49° and 131° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  5. 5.Two straight lines cross each other. One of the angles formed is 39°. What is the angle vertically opposite to it (in degrees)?
  6. 6.What is the complement of 16° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 90°. What is its corresponding angle (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
  9. 9.Two angles are supplementary. One is 74° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 101°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Are 67° and 23° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.What is the supplement of 143° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 25°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the supplement of 23° (in degrees)?
  16. 16.What is the supplement of 19° (in degrees)?
  17. 17.Are 23° and 69° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  18. 18.Are 20° and 70° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  19. 19.What is the complement of 34° (in degrees)?
  20. 20.What is the supplement of 131° (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.Are 19° and 161° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  23. 23.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
  24. 24.What is the supplement of 50° (in degrees)?
  25. 25.What is the supplement of 163° (in degrees)?
  26. 26.What is the complement of 82° (in degrees)?
  27. 27.What is the supplement of 174° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 33°. What is the angle vertically opposite to it (in degrees)?
  30. 30.What is the complement of 6° (in degrees)?
  31. 31.What is the supplement of 25° (in degrees)?
  32. 32.Are 22° and 96° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  33. 33.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the complement of 58° (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 109°. What is its alternate interior angle (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 81°. What is the angle vertically opposite to it (in degrees)?
  37. 37.What is the complement of 70° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 62°. What is its corresponding angle (in degrees)?
  39. 39.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 171
  2. 50
  3. 64
  4. Supplementary
  5. 39
  6. 74
  7. 90
  8. 155
  9. 127
  10. 101
  11. Complementary
  12. 37
  13. 25
  14. 151
  15. 157
  16. 161
  17. Neither
  18. Complementary
  19. 56
  20. 49
  21. 92
  22. Supplementary
  23. 32
  24. 130
  25. 17
  26. 8
  27. 6
  28. 124
  29. 33
  30. 84
  31. 155
  32. Neither
  33. 66
  34. 32
  35. 109
  36. 81
  37. 20
  38. 62
  39. 68
  40. 50

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