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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 988 · 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.Are 55° and 151° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  2. 2.Are 65° and 25° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  3. 3.Two straight lines cross each other. One of the angles formed is 113°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the supplement of 144° (in degrees)?
  8. 8.What is the complement of 64° (in degrees)?
  9. 9.What is the supplement of 45° (in degrees)?
  10. 10.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the complement of 13° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.What is the supplement of 68° (in degrees)?
  14. 14.What is the supplement of 143° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 38°. What is its other interior angle on the same side of the transversal (in degrees)?
  16. 16.What is the complement of 55° (in degrees)?
  17. 17.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the complement of 54° (in degrees)?
  19. 19.Are 20° and 160° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  20. 20.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the complement of 16° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 118°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 94°. What is the angle next to it on the same line (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One angle is 136°. What is its corresponding angle (in degrees)?
  25. 25.What is the supplement of 104° (in degrees)?
  26. 26.What is the supplement of 72° (in degrees)?
  27. 27.What is the complement of 5° (in degrees)?
  28. 28.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the supplement of 56° (in degrees)?
  30. 30.What is the complement of 69° (in degrees)?
  31. 31.What is the supplement of 5° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  33. 33.What is the supplement of 109° (in degrees)?
  34. 34.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 58°. What is the angle next to it on the same line (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 59°. What is the angle next to it on the same line (in degrees)?
  37. 37.What is the complement of 47° (in degrees)?
  38. 38.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the supplement of 152° (in degrees)?
  40. 40.What is the complement of 82° (in degrees)?

Answer key

  1. Neither
  2. Complementary
  3. 113
  4. 134
  5. 49
  6. 64
  7. 36
  8. 26
  9. 135
  10. 70
  11. 77
  12. 108
  13. 112
  14. 37
  15. 142
  16. 35
  17. 139
  18. 36
  19. Supplementary
  20. 63
  21. 74
  22. 118
  23. 86
  24. 136
  25. 76
  26. 108
  27. 85
  28. 77
  29. 124
  30. 21
  31. 175
  32. 60
  33. 71
  34. 76
  35. 122
  36. 121
  37. 43
  38. 60
  39. 28
  40. 8

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