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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 438 · 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 parallel lines are cut by a transversal. One interior angle is 97°. What is its other interior angle on the same side of the transversal (in degrees)?
  2. 2.What is the complement of 26° (in degrees)?
  3. 3.What is the supplement of 120° (in degrees)?
  4. 4.What is the supplement of 39° (in degrees)?
  5. 5.Are 28° and 62° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  6. 6.Two parallel lines are cut by a transversal. One angle is 114°. What is its corresponding angle (in degrees)?
  7. 7.Two angles are supplementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the complement of 65° (in degrees)?
  10. 10.What is the complement of 41° (in degrees)?
  11. 11.What is the complement of 35° (in degrees)?
  12. 12.What is the complement of 56° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 153°. What is the angle next to it on the same line (in degrees)?
  14. 14.What is the complement of 76° (in degrees)?
  15. 15.What is the supplement of 171° (in degrees)?
  16. 16.What is the complement of 55° (in degrees)?
  17. 17.What is the complement of 85° (in degrees)?
  18. 18.Are 55° and 35° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  19. 19.Two parallel lines are cut by a transversal. One angle is 42°. What is its corresponding angle (in degrees)?
  20. 20.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two angles are supplementary. One is 82° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the supplement of 43° (in degrees)?
  23. 23.What is the supplement of 121° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 109°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Are 33° and 147° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  26. 26.Two parallel lines are cut by a transversal. One angle is 118°. What is its corresponding angle (in degrees)?
  27. 27.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 131°. What is its corresponding angle (in degrees)?
  29. 29.What is the supplement of 49° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 151°. What is the angle next to it on the same line (in degrees)?
  31. 31.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the supplement of 103° (in degrees)?
  35. 35.What is the complement of 59° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 109°. What is its alternate interior angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its other interior angle on the same side of the transversal (in degrees)?
  38. 38.What is the complement of 5° (in degrees)?
  39. 39.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 60° and 120° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. 83
  2. 64
  3. 60
  4. 141
  5. Complementary
  6. 114
  7. 101
  8. 60
  9. 25
  10. 49
  11. 55
  12. 34
  13. 27
  14. 14
  15. 9
  16. 35
  17. 5
  18. Complementary
  19. 42
  20. 91
  21. 131
  22. 137
  23. 59
  24. 109
  25. Supplementary
  26. 118
  27. 47
  28. 131
  29. 131
  30. 29
  31. 99
  32. 120
  33. 51
  34. 77
  35. 31
  36. 109
  37. 121
  38. 85
  39. 52
  40. Supplementary

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