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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 703 · 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 32°. What is the angle next to it on the same line (in degrees)?
  2. 2.What is the complement of 70° (in degrees)?
  3. 3.Are 54° and 126° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  4. 4.Two straight lines cross each other. One of the angles formed is 64°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 141°. What is its alternate interior angle (in degrees)?
  6. 6.Are 44° and 136° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  7. 7.Are 38° and 52° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  8. 8.Are 44° and 8° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  9. 9.What is the complement of 47° (in degrees)?
  10. 10.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the complement of 58° (in degrees)?
  12. 12.What is the complement of 10° (in degrees)?
  13. 13.Are 57° and 52° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  14. 14.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  15. 15.Are 42° and 48° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  16. 16.Two straight lines cross each other. One of the angles formed is 54°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Are 18° and 72° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  18. 18.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 92°. What is the angle next to it on the same line (in degrees)?
  20. 20.What is the supplement of 101° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 79°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the complement of 51° (in degrees)?
  25. 25.Are 32° and 58° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  26. 26.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)?
  27. 27.Two straight lines cross each other. One of the angles formed is 37°. What is the angle next to it on the same line (in degrees)?
  28. 28.Are 71° and 109° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  29. 29.What is the supplement of 19° (in degrees)?
  30. 30.What is the complement of 37° (in degrees)?
  31. 31.What is the supplement of 46° (in degrees)?
  32. 32.What is the supplement of 108° (in degrees)?
  33. 33.Are 66° and 38° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  34. 34.Two angles are supplementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  35. 35.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  36. 36.Are 19° and 71° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  37. 37.What is the complement of 77° (in degrees)?
  38. 38.What is the supplement of 92° (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 129°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 148
  2. 20
  3. Supplementary
  4. 64
  5. 141
  6. Supplementary
  7. Complementary
  8. Neither
  9. 43
  10. 121
  11. 32
  12. 80
  13. Neither
  14. 74
  15. Complementary
  16. 54
  17. Complementary
  18. 99
  19. 88
  20. 79
  21. 68
  22. 101
  23. 65
  24. 39
  25. Complementary
  26. 34
  27. 143
  28. Supplementary
  29. 161
  30. 53
  31. 134
  32. 72
  33. Neither
  34. 95
  35. 93
  36. Complementary
  37. 13
  38. 88
  39. 49
  40. 129

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