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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 353 · 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 parallel lines are cut by a transversal. One interior angle is 104°. What is its other interior angle on the same side of the transversal (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 100°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the supplement of 151° (in degrees)?
  4. 4.Are 16° and 29° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  5. 5.What is the supplement of 108° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 75°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.What is the complement of 59° (in degrees)?
  8. 8.What is the supplement of 12° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 87°. What is the angle next to it on the same line (in degrees)?
  10. 10.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 101°. What is its alternate interior angle (in degrees)?
  12. 12.What is the complement of 32° (in degrees)?
  13. 13.Are 21° and 26° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  14. 14.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the supplement of 55° (in degrees)?
  16. 16.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 62°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 96°. What is its alternate interior angle (in degrees)?
  19. 19.What is the complement of 14° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 37°. What is the angle next to it on the same line (in degrees)?
  21. 21.What is the supplement of 170° (in degrees)?
  22. 22.What is the complement of 27° (in degrees)?
  23. 23.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 107° (in degrees)?
  26. 26.What is the complement of 78° (in degrees)?
  27. 27.Are 20° and 134° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 33°. What is its alternate interior angle (in degrees)?
  29. 29.What is the supplement of 117° (in degrees)?
  30. 30.What is the supplement of 130° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 39°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Are 16° and 154° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  33. 33.What is the complement of 29° (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 74°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.What is the supplement of 161° (in degrees)?
  36. 36.What is the supplement of 139° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 140°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 38°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the complement of 79° (in degrees)?
  40. 40.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 76
  2. 100
  3. 29
  4. Neither
  5. 72
  6. 105
  7. 31
  8. 168
  9. 93
  10. 52
  11. 101
  12. 58
  13. Neither
  14. 65
  15. 125
  16. 92
  17. 62
  18. 96
  19. 76
  20. 143
  21. 10
  22. 63
  23. 154
  24. 48
  25. 73
  26. 12
  27. Neither
  28. 33
  29. 63
  30. 50
  31. 39
  32. Neither
  33. 61
  34. 106
  35. 19
  36. 41
  37. 140
  38. 38
  39. 11
  40. 93

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