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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 653 · 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 29°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Are 12° and 168° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 39°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.What is the complement of 21° (in degrees)?
  5. 5.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 65°. What is the angle vertically opposite to it (in degrees)?
  7. 7.What is the supplement of 101° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 74°. What is its other interior angle on the same side of the transversal (in degrees)?
  9. 9.Are 23° and 157° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  10. 10.What is the supplement of 92° (in degrees)?
  11. 11.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the supplement of 64° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 38°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
  15. 15.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the complement of 56° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 56°. What is the angle next to it on the same line (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One angle is 41°. What is its corresponding angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 120°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 121°. What is its corresponding angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 55°. What is the angle next to it on the same line (in degrees)?
  23. 23.Are 47° and 133° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  24. 24.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)?
  25. 25.What is the complement of 8° (in degrees)?
  26. 26.What is the supplement of 66° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 140°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 99°. What is its corresponding angle (in degrees)?
  29. 29.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the supplement of 11° (in degrees)?
  31. 31.What is the supplement of 104° (in degrees)?
  32. 32.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  33. 33.What is the complement of 51° (in degrees)?
  34. 34.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 27° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 36°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 85°. What is the angle vertically opposite to it (in degrees)?
  38. 38.What is the supplement of 56° (in degrees)?
  39. 39.What is the complement of 7° (in degrees)?
  40. 40.What is the supplement of 22° (in degrees)?

Answer key

  1. 29
  2. Supplementary
  3. 141
  4. 69
  5. 121
  6. 65
  7. 79
  8. 106
  9. Supplementary
  10. 88
  11. 124
  12. 116
  13. 38
  14. 55
  15. 76
  16. 34
  17. 124
  18. 41
  19. 120
  20. 32
  21. 121
  22. 125
  23. Supplementary
  24. 150
  25. 82
  26. 114
  27. 140
  28. 99
  29. 97
  30. 169
  31. 76
  32. 139
  33. 39
  34. 143
  35. 63
  36. 144
  37. 85
  38. 124
  39. 83
  40. 158

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