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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 411 · 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 27° (in degrees)?
  2. 2.What is the complement of 17° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 95°. What is the angle next to it on the same line (in degrees)?
  4. 4.What is the complement of 75° (in degrees)?
  5. 5.Are 55° and 146° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  6. 6.Are 52° and 38° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  7. 7.What is the supplement of 155° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 41°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the supplement of 55° (in degrees)?
  10. 10.Are 18° and 72° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  11. 11.What is the supplement of 75° (in degrees)?
  12. 12.Are 42° and 138° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the complement of 62° (in degrees)?
  15. 15.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)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 126°. What is its corresponding angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 61°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 82°. What is the angle next to it on the same line (in degrees)?
  19. 19.What is the supplement of 46° (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 143°. What is its alternate interior angle (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 146°. What is the angle next to it on the same line (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 65°. What is its corresponding angle (in degrees)?
  23. 23.What is the complement of 15° (in degrees)?
  24. 24.Are 25° and 95° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  25. 25.What is the supplement of 11° (in degrees)?
  26. 26.Are 66° and 24° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.Two parallel lines are cut by a transversal. One angle is 55°. What is its corresponding angle (in degrees)?
  28. 28.What is the complement of 78° (in degrees)?
  29. 29.What is the supplement of 77° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 30°. What is the angle next to it on the same line (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 103°. What is the angle vertically opposite to it (in degrees)?
  32. 32.What is the complement of 54° (in degrees)?
  33. 33.What is the supplement of 95° (in degrees)?
  34. 34.What is the complement of 67° (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 39°. What is its alternate interior angle (in degrees)?
  36. 36.What is the supplement of 62° (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 69°. What is its other interior angle on the same side of the transversal (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 75°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 141°. What is its alternate interior angle (in degrees)?
  40. 40.Are 52° and 145° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. 153
  2. 73
  3. 85
  4. 15
  5. Neither
  6. Complementary
  7. 25
  8. 41
  9. 125
  10. Complementary
  11. 105
  12. Supplementary
  13. 133
  14. 28
  15. 74
  16. 126
  17. 61
  18. 98
  19. 134
  20. 143
  21. 34
  22. 65
  23. 75
  24. Neither
  25. 169
  26. Complementary
  27. 55
  28. 12
  29. 103
  30. 150
  31. 103
  32. 36
  33. 85
  34. 23
  35. 39
  36. 118
  37. 111
  38. 105
  39. 141
  40. Neither

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