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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 102 · 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 complement of 31° (in degrees)?
  2. 2.What is the complement of 56° (in degrees)?
  3. 3.What is the complement of 10° (in degrees)?
  4. 4.Are 13° and 167° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  5. 5.What is the complement of 65° (in degrees)?
  6. 6.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  8. 8.What is the supplement of 25° (in degrees)?
  9. 9.Are 53° and 93° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  10. 10.What is the complement of 8° (in degrees)?
  11. 11.Two angles are supplementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 134°. What is the angle next to it on the same line (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 52°. What is its alternate interior angle (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 131°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 73°. What is the angle next to it on the same line (in degrees)?
  17. 17.Two angles are supplementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 149°. What is the angle next to it on the same line (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Are 20° and 70° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  21. 21.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  22. 22.Are 23° and 157° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  23. 23.What is the complement of 60° (in degrees)?
  24. 24.What is the supplement of 21° (in degrees)?
  25. 25.Are 38° and 142° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  26. 26.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  27. 27.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the supplement of 156° (in degrees)?
  29. 29.Are 47° and 133° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 151°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the supplement of 50° (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 57°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 160°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?
  37. 37.What is the supplement of 5° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 105°. What is its corresponding angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 34°. What is its corresponding angle (in degrees)?
  40. 40.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 59
  2. 34
  3. 80
  4. Supplementary
  5. 25
  6. 54
  7. 52
  8. 155
  9. Neither
  10. 82
  11. 94
  12. 118
  13. 46
  14. 52
  15. 131
  16. 107
  17. 109
  18. 31
  19. 130
  20. Complementary
  21. 97
  22. Supplementary
  23. 30
  24. 159
  25. Supplementary
  26. 63
  27. 121
  28. 24
  29. Supplementary
  30. 148
  31. 147
  32. 29
  33. 130
  34. 123
  35. 160
  36. 43
  37. 175
  38. 105
  39. 34
  40. 105

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