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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 134 · 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 52° (in degrees)?
  2. 2.Are 27° and 153° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  3. 3.Two straight lines cross each other. One of the angles formed is 71°. What is the angle next to it on the same line (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its alternate interior angle (in degrees)?
  5. 5.What is the supplement of 56° (in degrees)?
  6. 6.Are 66° and 24° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  8. 8.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)?
  9. 9.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 128°. What is the angle next to it on the same line (in degrees)?
  11. 11.What is the complement of 24° (in degrees)?
  12. 12.Are 16° and 115° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  13. 13.Are 44° and 136° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  14. 14.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)?
  15. 15.What is the supplement of 28° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 127°. What is its corresponding angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.What is the complement of 64° (in degrees)?
  19. 19.What is the complement of 54° (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 94°. What is its alternate interior angle (in degrees)?
  21. 21.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 130°. What is its corresponding angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 137°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 62°. What is the angle next to it on the same line (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 142°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its alternate interior angle (in degrees)?
  29. 29.What is the complement of 13° (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 67°. What is its alternate interior angle (in degrees)?
  31. 31.What is the supplement of 38° (in degrees)?
  32. 32.What is the supplement of 97° (in degrees)?
  33. 33.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 46°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the supplement of 103° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 35°. What is its corresponding angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 114°. What is its corresponding angle (in degrees)?
  38. 38.Are 39° and 51° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  39. 39.Two straight lines cross each other. One of the angles formed is 123°. What is the angle vertically opposite to it (in degrees)?
  40. 40.What is the supplement of 104° (in degrees)?

Answer key

  1. 128
  2. Supplementary
  3. 109
  4. 123
  5. 124
  6. Complementary
  7. 99
  8. 45
  9. 66
  10. 52
  11. 66
  12. Neither
  13. Supplementary
  14. 78
  15. 152
  16. 127
  17. 137
  18. 26
  19. 36
  20. 94
  21. 154
  22. 50
  23. 130
  24. 137
  25. 118
  26. 38
  27. 155
  28. 65
  29. 77
  30. 67
  31. 142
  32. 83
  33. 134
  34. 46
  35. 77
  36. 35
  37. 114
  38. Complementary
  39. 123
  40. 76

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