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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 84 · 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 144° (in degrees)?
  2. 2.What is the complement of 40° (in degrees)?
  3. 3.What is the supplement of 91° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 61°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One angle is 138°. What is its corresponding angle (in degrees)?
  6. 6.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  7. 7.Are 39° and 51° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  8. 8.Are 79° and 101° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  9. 9.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the supplement of 49° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 92°. What is the angle vertically opposite to it (in degrees)?
  12. 12.What is the complement of 6° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 88°. What is its corresponding angle (in degrees)?
  14. 14.What is the complement of 56° (in degrees)?
  15. 15.What is the supplement of 64° (in degrees)?
  16. 16.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  17. 17.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)?
  18. 18.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 147°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its alternate interior angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.What is the complement of 47° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 126°. What is its corresponding angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 140°. What is the angle vertically opposite to it (in degrees)?
  25. 25.What is the complement of 33° (in degrees)?
  26. 26.What is the supplement of 166° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the complement of 64° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 42°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 60°. What is the angle next to it on the same line (in degrees)?
  31. 31.What is the complement of 12° (in degrees)?
  32. 32.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)?
  33. 33.Two straight lines cross each other. One of the angles formed is 43°. What is the angle vertically opposite to it (in degrees)?
  34. 34.What is the complement of 44° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 79°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the supplement of 79° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the supplement of 158° (in degrees)?
  40. 40.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 36
  2. 50
  3. 89
  4. 61
  5. 138
  6. 70
  7. Complementary
  8. Supplementary
  9. 46
  10. 131
  11. 92
  12. 84
  13. 88
  14. 34
  15. 116
  16. 103
  17. 68
  18. 66
  19. 33
  20. 30
  21. 130
  22. 43
  23. 126
  24. 140
  25. 57
  26. 14
  27. 24
  28. 26
  29. 42
  30. 120
  31. 78
  32. 108
  33. 43
  34. 46
  35. 79
  36. 135
  37. 101
  38. 60
  39. 22
  40. 73

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