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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 472 · 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 128°. What is the angle next to it on the same line (in degrees)?
  2. 2.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 100°. What is its corresponding angle (in degrees)?
  4. 4.What is the supplement of 89° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 31°. What is the angle vertically opposite to it (in degrees)?
  6. 6.What is the complement of 24° (in degrees)?
  7. 7.What is the supplement of 155° (in degrees)?
  8. 8.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the complement of 9° (in degrees)?
  10. 10.Are 23° and 67° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  11. 11.What is the supplement of 22° (in degrees)?
  12. 12.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  16. 16.Are 79° and 91° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  17. 17.Are 64° and 26° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  18. 18.Two straight lines cross each other. One of the angles formed is 41°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 59°. What is its corresponding angle (in degrees)?
  20. 20.What is the supplement of 103° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 35°. What is the angle next to it on the same line (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 127°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 144°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 148°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 83°. What is its corresponding angle (in degrees)?
  26. 26.What is the complement of 54° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 61°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the complement of 76° (in degrees)?
  29. 29.What is the complement of 59° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 48°. What is the angle vertically opposite to it (in degrees)?
  31. 31.What is the complement of 13° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 30°. What is its corresponding angle (in degrees)?
  33. 33.Are 27° and 153° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  34. 34.Are 12° and 124° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its other interior angle on the same side of the transversal (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 155°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 90°. What is its alternate interior angle (in degrees)?
  38. 38.Are 35° and 55° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  39. 39.What is the complement of 46° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 118°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 52
  2. 112
  3. 100
  4. 91
  5. 31
  6. 66
  7. 25
  8. 108
  9. 81
  10. Complementary
  11. 158
  12. 96
  13. 56
  14. 151
  15. 69
  16. Neither
  17. Complementary
  18. 41
  19. 59
  20. 77
  21. 145
  22. 53
  23. 144
  24. 148
  25. 83
  26. 36
  27. 61
  28. 14
  29. 31
  30. 48
  31. 77
  32. 30
  33. Supplementary
  34. Neither
  35. 137
  36. 25
  37. 90
  38. Complementary
  39. 44
  40. 62

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