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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 844 · 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 133°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Are 25° and 83° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 63°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the supplement of 71° (in degrees)?
  7. 7.Are 57° and 123° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  8. 8.Two straight lines cross each other. One of the angles formed is 108°. What is the angle next to it on the same line (in degrees)?
  9. 9.What is the complement of 71° (in degrees)?
  10. 10.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 33°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 78°. What is its corresponding angle (in degrees)?
  13. 13.What is the supplement of 162° (in degrees)?
  14. 14.What is the supplement of 37° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 64°. What is its alternate interior angle (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 158°. What is the angle next to it on the same line (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 89°. What is its corresponding angle (in degrees)?
  18. 18.What is the supplement of 169° (in degrees)?
  19. 19.What is the supplement of 57° (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 73°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.What is the supplement of 152° (in degrees)?
  22. 22.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 54°. What is its corresponding angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 30°. What is the angle vertically opposite to it (in degrees)?
  25. 25.What is the supplement of 26° (in degrees)?
  26. 26.What is the complement of 67° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 49°. What is the angle next to it on the same line (in degrees)?
  28. 28.Are 31° and 149° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  29. 29.What is the supplement of 74° (in degrees)?
  30. 30.What is the supplement of 151° (in degrees)?
  31. 31.What is the supplement of 12° (in degrees)?
  32. 32.What is the supplement of 49° (in degrees)?
  33. 33.What is the complement of 75° (in degrees)?
  34. 34.What is the supplement of 29° (in degrees)?
  35. 35.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
  36. 36.What is the complement of 15° (in degrees)?
  37. 37.What is the supplement of 76° (in degrees)?
  38. 38.Are 27° and 153° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  39. 39.What is the supplement of 44° (in degrees)?
  40. 40.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 133
  2. Neither
  3. 71
  4. 117
  5. 148
  6. 109
  7. Supplementary
  8. 72
  9. 19
  10. 54
  11. 33
  12. 78
  13. 18
  14. 143
  15. 64
  16. 22
  17. 89
  18. 11
  19. 123
  20. 107
  21. 28
  22. 125
  23. 54
  24. 30
  25. 154
  26. 23
  27. 131
  28. Supplementary
  29. 106
  30. 29
  31. 168
  32. 131
  33. 15
  34. 151
  35. 153
  36. 75
  37. 104
  38. Supplementary
  39. 136
  40. 103

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