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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 983 · 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 parallel lines are cut by a transversal. One interior angle is 140°. What is its alternate interior angle (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 89°. What is the angle next to it on the same line (in degrees)?
  3. 3.What is the supplement of 137° (in degrees)?
  4. 4.Are 71° and 109° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  5. 5.What is the supplement of 36° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  7. 7.What is the supplement of 42° (in degrees)?
  8. 8.What is the supplement of 6° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 56°. What is the angle vertically opposite to it (in degrees)?
  10. 10.What is the complement of 80° (in degrees)?
  11. 11.Are 64° and 26° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  12. 12.Two straight lines cross each other. One of the angles formed is 34°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Are 50° and 71° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  14. 14.What is the complement of 14° (in degrees)?
  15. 15.Are 11° and 79° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  16. 16.What is the complement of 20° (in degrees)?
  17. 17.What is the supplement of 128° (in degrees)?
  18. 18.What is the supplement of 101° (in degrees)?
  19. 19.What is the supplement of 60° (in degrees)?
  20. 20.What is the complement of 25° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its alternate interior angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 106°. What is the angle next to it on the same line (in degrees)?
  23. 23.What is the supplement of 85° (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One angle is 103°. What is its corresponding angle (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 144°. What is the angle next to it on the same line (in degrees)?
  26. 26.Are 10° and 98° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 105°. What is its other interior angle on the same side of the transversal (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 127°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  30. 30.Are 48° and 42° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  31. 31.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 43°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 120°. What is its alternate interior angle (in degrees)?
  35. 35.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 117°. What is its corresponding angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 73°. What is its corresponding angle (in degrees)?
  38. 38.What is the supplement of 77° (in degrees)?
  39. 39.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the supplement of 81° (in degrees)?

Answer key

  1. 140
  2. 91
  3. 43
  4. Supplementary
  5. 144
  6. 124
  7. 138
  8. 174
  9. 56
  10. 10
  11. Complementary
  12. 34
  13. Neither
  14. 76
  15. Complementary
  16. 70
  17. 52
  18. 79
  19. 120
  20. 65
  21. 50
  22. 74
  23. 95
  24. 103
  25. 36
  26. Neither
  27. 75
  28. 127
  29. 66
  30. Complementary
  31. 76
  32. 57
  33. 43
  34. 120
  35. 136
  36. 117
  37. 73
  38. 103
  39. 72
  40. 99

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