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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 357 · 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 straight lines cross each other. One of the angles formed is 95°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 44°. What is the angle next to it on the same line (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 35°. 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 32°. What is its alternate interior angle (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 136°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 135°. What is its corresponding angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 26°. What is the angle next to it on the same line (in degrees)?
  8. 8.What is the complement of 71° (in degrees)?
  9. 9.Are 12° and 78° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 64°. What is its other interior angle on the same side of the transversal (in degrees)?
  11. 11.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the complement of 42° (in degrees)?
  13. 13.What is the complement of 33° (in degrees)?
  14. 14.Are 44° and 73° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  15. 15.Two parallel lines are cut by a transversal. One angle is 113°. What is its corresponding angle (in degrees)?
  16. 16.What is the supplement of 166° (in degrees)?
  17. 17.What is the complement of 23° (in degrees)?
  18. 18.What is the supplement of 143° (in degrees)?
  19. 19.What is the complement of 63° (in degrees)?
  20. 20.Are 35° and 145° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.What is the supplement of 150° (in degrees)?
  22. 22.What is the complement of 57° (in degrees)?
  23. 23.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)?
  24. 24.What is the supplement of 108° (in degrees)?
  25. 25.What is the supplement of 90° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 75°. What is its corresponding angle (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 59°. What is its corresponding angle (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 144°. What is its corresponding angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One angle is 86°. What is its corresponding angle (in degrees)?
  31. 31.Are 55° and 125° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.What is the supplement of 160° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 105°. What is the angle next to it on the same line (in degrees)?
  34. 34.Are 26° and 81° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  35. 35.What is the complement of 35° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 123°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Are 26° and 154° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  38. 38.What is the supplement of 60° (in degrees)?
  39. 39.Are 63° and 27° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  40. 40.What is the complement of 32° (in degrees)?

Answer key

  1. 95
  2. 136
  3. 145
  4. 32
  5. 44
  6. 135
  7. 154
  8. 19
  9. Complementary
  10. 116
  11. 46
  12. 48
  13. 57
  14. Neither
  15. 113
  16. 14
  17. 67
  18. 37
  19. 27
  20. Supplementary
  21. 30
  22. 33
  23. 87
  24. 72
  25. 90
  26. 75
  27. 39
  28. 59
  29. 144
  30. 86
  31. Supplementary
  32. 20
  33. 75
  34. Neither
  35. 55
  36. 123
  37. Supplementary
  38. 120
  39. Complementary
  40. 58

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