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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 638 · 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 28°. What is the angle next to it on the same line (in degrees)?
  2. 2.What is the complement of 9° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 104°. What is the angle next to it on the same line (in degrees)?
  4. 4.Are 54° and 126° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  5. 5.What is the supplement of 109° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 71°. What is the angle vertically opposite to it (in degrees)?
  7. 7.Are 58° and 122° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  8. 8.Two straight lines cross each other. One of the angles formed is 69°. What is the angle next to it on the same line (in degrees)?
  9. 9.Are 45° and 56° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  10. 10.What is the supplement of 46° (in degrees)?
  11. 11.What is the complement of 51° (in degrees)?
  12. 12.Are 12° and 168° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  13. 13.Two parallel lines are cut by a transversal. One angle is 135°. What is its corresponding angle (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 156°. What is the angle next to it on the same line (in degrees)?
  15. 15.What is the supplement of 36° (in degrees)?
  16. 16.Are 46° and 134° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  17. 17.Two parallel lines are cut by a transversal. One angle is 69°. What is its corresponding angle (in degrees)?
  18. 18.What is the supplement of 27° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 35°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 101°. What is the angle vertically opposite to it (in degrees)?
  21. 21.What is the complement of 38° (in degrees)?
  22. 22.What is the complement of 30° (in degrees)?
  23. 23.What is the supplement of 15° (in degrees)?
  24. 24.What is the complement of 7° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 116°. What is its alternate interior angle (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  27. 27.What is the complement of 48° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 131°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the supplement of 106° (in degrees)?
  30. 30.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  32. 32.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)?
  33. 33.What is the complement of 27° (in degrees)?
  34. 34.What is the complement of 21° (in degrees)?
  35. 35.Are 57° and 48° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.What is the supplement of 110° (in degrees)?
  37. 37.What is the supplement of 45° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 129°. What is its alternate interior angle (in degrees)?
  39. 39.Are 21° and 43° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 128°. What is its other interior angle on the same side of the transversal (in degrees)?

Answer key

  1. 152
  2. 81
  3. 76
  4. Supplementary
  5. 71
  6. 71
  7. Supplementary
  8. 111
  9. Neither
  10. 134
  11. 39
  12. Supplementary
  13. 135
  14. 24
  15. 144
  16. Supplementary
  17. 69
  18. 153
  19. 35
  20. 101
  21. 52
  22. 60
  23. 165
  24. 83
  25. 116
  26. 60
  27. 42
  28. 131
  29. 74
  30. 69
  31. 64
  32. 34
  33. 63
  34. 69
  35. Neither
  36. 70
  37. 135
  38. 129
  39. Neither
  40. 52

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