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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 264 · 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 angle is 30°. What is its corresponding angle (in degrees)?
  2. 2.What is the supplement of 113° (in degrees)?
  3. 3.Are 36° and 12° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  4. 4.Two straight lines cross each other. One of the angles formed is 76°. What is the angle next to it on the same line (in degrees)?
  5. 5.Are 29° and 61° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  8. 8.What is the supplement of 80° (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 98°. What is its other interior angle on the same side of the transversal (in degrees)?
  10. 10.What is the complement of 80° (in degrees)?
  11. 11.What is the supplement of 32° (in degrees)?
  12. 12.What is the supplement of 36° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 102°. What is the angle next to it on the same line (in degrees)?
  14. 14.What is the complement of 47° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 74°. What is its alternate interior angle (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 131°. What is its corresponding angle (in degrees)?
  17. 17.What is the complement of 53° (in degrees)?
  18. 18.What is the supplement of 13° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 139°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 40°. What is its alternate interior angle (in degrees)?
  21. 21.Two angles are supplementary. One is 78° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the supplement of 55° (in degrees)?
  23. 23.What is the complement of 42° (in degrees)?
  24. 24.Are 49° and 41° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  25. 25.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 49° (in degrees)?
  27. 27.What is the supplement of 61° (in degrees)?
  28. 28.What is the supplement of 125° (in degrees)?
  29. 29.Are 44° and 136° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  30. 30.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  31. 31.What is the complement of 5° (in degrees)?
  32. 32.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 65°. What is the angle next to it on the same line (in degrees)?
  34. 34.What is the supplement of 122° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 90°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 76°. What is its corresponding angle (in degrees)?
  37. 37.What is the supplement of 5° (in degrees)?
  38. 38.Are 71° and 19° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  39. 39.Are 39° and 51° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 137°. What is its other interior angle on the same side of the transversal (in degrees)?

Answer key

  1. 30
  2. 67
  3. Neither
  4. 104
  5. Complementary
  6. 55
  7. 47
  8. 100
  9. 82
  10. 10
  11. 148
  12. 144
  13. 78
  14. 43
  15. 74
  16. 131
  17. 37
  18. 167
  19. 41
  20. 40
  21. 129
  22. 125
  23. 48
  24. Complementary
  25. 134
  26. 131
  27. 119
  28. 55
  29. Supplementary
  30. 72
  31. 85
  32. 60
  33. 115
  34. 58
  35. 90
  36. 76
  37. 175
  38. Complementary
  39. Complementary
  40. 43

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