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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 938 · 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 19° (in degrees)?
  2. 2.Are 15° and 75° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  3. 3.What is the complement of 60° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 122°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 82°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its other interior angle on the same side of the transversal (in degrees)?
  8. 8.What is the complement of 77° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 37°. What is the angle vertically opposite to it (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 121°. What is its other interior angle on the same side of the transversal (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 150°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the complement of 84° (in degrees)?
  14. 14.What is the supplement of 110° (in degrees)?
  15. 15.What is the complement of 41° (in degrees)?
  16. 16.Are 38° and 121° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  17. 17.What is the supplement of 56° (in degrees)?
  18. 18.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  19. 19.Are 47° and 43° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.What is the supplement of 130° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 91°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 46°. What is the angle vertically opposite to it (in degrees)?
  23. 23.What is the complement of 23° (in degrees)?
  24. 24.Are 41° and 34° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  25. 25.Two straight lines cross each other. One of the angles formed is 99°. What is the angle next to it on the same line (in degrees)?
  26. 26.What is the complement of 31° (in degrees)?
  27. 27.Are 74° and 16° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  28. 28.Are 56° and 34° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  29. 29.Two parallel lines are cut by a transversal. One angle is 85°. What is its corresponding angle (in degrees)?
  30. 30.Are 13° and 77° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  31. 31.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 91°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the complement of 82° (in degrees)?
  34. 34.What is the complement of 49° (in degrees)?
  35. 35.What is the complement of 51° (in degrees)?
  36. 36.Two angles are supplementary. One is 134° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its other interior angle on the same side of the transversal (in degrees)?
  38. 38.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the complement of 39° (in degrees)?
  40. 40.Are 77° and 103° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary

Answer key

  1. 161
  2. Complementary
  3. 30
  4. 58
  5. 82
  6. 69
  7. 124
  8. 13
  9. 37
  10. 59
  11. 150
  12. 50
  13. 6
  14. 70
  15. 49
  16. Neither
  17. 124
  18. 57
  19. Complementary
  20. 50
  21. 91
  22. 46
  23. 67
  24. Neither
  25. 81
  26. 59
  27. Complementary
  28. Complementary
  29. 85
  30. Complementary
  31. 155
  32. 89
  33. 8
  34. 41
  35. 39
  36. 157
  37. 132
  38. 71
  39. 51
  40. Supplementary

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