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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 394 · 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 37° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 34°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 20°. What is the angle next to it on the same line (in degrees)?
  4. 4.Are 39° and 51° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.Are 63° and 27° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  6. 6.Two angles are supplementary. One is 108° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the supplement of 158° (in degrees)?
  8. 8.What is the supplement of 67° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
  10. 10.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 35° and 145° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.Are 69° and 104° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  14. 14.Are 53° and 37° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  15. 15.What is the supplement of 80° (in degrees)?
  16. 16.What is the supplement of 45° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
  18. 18.What is the supplement of 52° (in degrees)?
  19. 19.What is the supplement of 22° (in degrees)?
  20. 20.What is the supplement of 53° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 47°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 80°. What is its corresponding angle (in degrees)?
  23. 23.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the supplement of 32° (in degrees)?
  25. 25.What is the supplement of 56° (in degrees)?
  26. 26.Are 75° and 15° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.Two parallel lines are cut by a transversal. One angle is 94°. What is its corresponding angle (in degrees)?
  28. 28.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)?
  29. 29.What is the supplement of 17° (in degrees)?
  30. 30.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  31. 31.Are 60° and 30° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.What is the complement of 10° (in degrees)?
  34. 34.Are 57° and 33° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  36. 36.What is the supplement of 71° (in degrees)?
  37. 37.Are 29° and 61° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  38. 38.Two straight lines cross each other. One of the angles formed is 72°. What is the angle next to it on the same line (in degrees)?
  39. 39.Are 54° and 85° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  40. 40.Two straight lines cross each other. One of the angles formed is 136°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 53
  2. 34
  3. 160
  4. Complementary
  5. Complementary
  6. 144
  7. 22
  8. 113
  9. 152
  10. 53
  11. Supplementary
  12. Neither
  13. 134
  14. Complementary
  15. 100
  16. 135
  17. 86
  18. 128
  19. 158
  20. 127
  21. 47
  22. 80
  23. 92
  24. 148
  25. 124
  26. Complementary
  27. 94
  28. 118
  29. 163
  30. 68
  31. Complementary
  32. 120
  33. 80
  34. Complementary
  35. 66
  36. 109
  37. Complementary
  38. 108
  39. Neither
  40. 136

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