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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 127 · 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 supplement of 44° (in degrees)?
  2. 2.What is the supplement of 71° (in degrees)?
  3. 3.What is the supplement of 83° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One angle is 65°. What is its corresponding angle (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 25°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 69°. What is its corresponding angle (in degrees)?
  7. 7.What is the supplement of 118° (in degrees)?
  8. 8.Are 25° and 155° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  9. 9.Two parallel lines are cut by a transversal. One angle is 52°. What is its corresponding angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 76°. What is its corresponding angle (in degrees)?
  11. 11.Are 61° and 43° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  12. 12.Two straight lines cross each other. One of the angles formed is 135°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its alternate interior angle (in degrees)?
  14. 14.Are 39° and 56° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  15. 15.Two straight lines cross each other. One of the angles formed is 160°. What is the angle next to it on the same line (in degrees)?
  16. 16.What is the complement of 59° (in degrees)?
  17. 17.What is the complement of 67° (in degrees)?
  18. 18.Are 12° and 49° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 101°. What is its alternate interior angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 129°. What is its alternate interior angle (in degrees)?
  21. 21.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  22. 22.Are 56° and 124° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  23. 23.Are 20° and 24° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  24. 24.What is the supplement of 53° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 140°. What is the angle vertically opposite to it (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 141°. What is the angle next to it on the same line (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One angle is 54°. What is its corresponding angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 53°. What is its alternate interior angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 46°. What is the angle next to it on the same line (in degrees)?
  30. 30.Two angles are supplementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the supplement of 36° (in degrees)?
  33. 33.What is the supplement of 82° (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 61°. What is its corresponding angle (in degrees)?
  35. 35.What is the supplement of 35° (in degrees)?
  36. 36.Are 52° and 101° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  37. 37.Two straight lines cross each other. One of the angles formed is 78°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 50°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 143°. What is the angle vertically opposite to it (in degrees)?
  40. 40.What is the supplement of 42° (in degrees)?

Answer key

  1. 136
  2. 109
  3. 97
  4. 65
  5. 155
  6. 69
  7. 62
  8. Supplementary
  9. 52
  10. 76
  11. Neither
  12. 45
  13. 111
  14. Neither
  15. 20
  16. 31
  17. 23
  18. Neither
  19. 101
  20. 129
  21. 121
  22. Supplementary
  23. Neither
  24. 127
  25. 140
  26. 39
  27. 54
  28. 53
  29. 134
  30. 115
  31. 75
  32. 144
  33. 98
  34. 61
  35. 145
  36. Neither
  37. 102
  38. 130
  39. 143
  40. 138

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