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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 712 · 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 72° (in degrees)?
  2. 2.What is the complement of 18° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 122°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.What is the supplement of 113° (in degrees)?
  5. 5.What is the complement of 67° (in degrees)?
  6. 6.What is the supplement of 47° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 111°. What is its corresponding angle (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 111°. What is the angle vertically opposite to it (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One angle is 61°. What is its corresponding angle (in degrees)?
  10. 10.What is the supplement of 135° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 132°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 129°. What is its corresponding angle (in degrees)?
  14. 14.Are 41° and 6° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  15. 15.Two parallel lines are cut by a transversal. One angle is 47°. What is its corresponding angle (in degrees)?
  16. 16.What is the complement of 48° (in degrees)?
  17. 17.What is the complement of 58° (in degrees)?
  18. 18.Are 55° and 125° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  20. 20.What is the complement of 19° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 134°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.What is the complement of 78° (in degrees)?
  23. 23.Are 51° and 48° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  24. 24.What is the supplement of 61° (in degrees)?
  25. 25.What is the complement of 71° (in degrees)?
  26. 26.What is the supplement of 28° (in degrees)?
  27. 27.Are 69° and 111° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.What is the complement of 33° (in degrees)?
  29. 29.What is the complement of 46° (in degrees)?
  30. 30.Are 65° and 36° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  31. 31.Two straight lines cross each other. One of the angles formed is 93°. What is the angle next to it on the same line (in degrees)?
  32. 32.Two angles are complementary. One is 48° 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 101°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  35. 35.Are 79° and 101° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the complement of 41° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 131°. What is its alternate interior angle (in degrees)?
  40. 40.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)?

Answer key

  1. 18
  2. 72
  3. 58
  4. 67
  5. 23
  6. 133
  7. 111
  8. 111
  9. 61
  10. 45
  11. 139
  12. 132
  13. 129
  14. Neither
  15. 47
  16. 42
  17. 32
  18. Supplementary
  19. 67
  20. 71
  21. 46
  22. 12
  23. Neither
  24. 119
  25. 19
  26. 152
  27. Supplementary
  28. 57
  29. 44
  30. Neither
  31. 87
  32. 69
  33. 101
  34. 121
  35. Supplementary
  36. 61
  37. 49
  38. 24
  39. 131
  40. 131

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