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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 384 · 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 angles are supplementary. One is 136° more than the other. What is the bigger angle (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 133°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 129°. What is its corresponding angle (in degrees)?
  4. 4.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the complement of 44° (in degrees)?
  6. 6.What is the supplement of 137° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 135°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 53°. What is the angle next to it on the same line (in degrees)?
  10. 10.What is the supplement of 17° (in degrees)?
  11. 11.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the supplement of 121° (in degrees)?
  13. 13.What is the supplement of 56° (in degrees)?
  14. 14.What is the supplement of 143° (in degrees)?
  15. 15.What is the supplement of 13° (in degrees)?
  16. 16.What is the complement of 50° (in degrees)?
  17. 17.What is the complement of 63° (in degrees)?
  18. 18.What is the complement of 25° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 44°. What is its corresponding angle (in degrees)?
  20. 20.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the supplement of 36° (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 101°. What is its corresponding angle (in degrees)?
  23. 23.What is the complement of 64° (in degrees)?
  24. 24.What is the supplement of 140° (in degrees)?
  25. 25.What is the complement of 80° (in degrees)?
  26. 26.Are 17° and 73° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  27. 27.What is the supplement of 59° (in degrees)?
  28. 28.What is the supplement of 99° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its alternate interior angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One angle is 66°. What is its corresponding angle (in degrees)?
  31. 31.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  32. 32.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)?
  33. 33.Two straight lines cross each other. One of the angles formed is 140°. What is the angle next to it on the same line (in degrees)?
  34. 34.Are 70° and 146° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 127°. What is its other interior angle on the same side of the transversal (in degrees)?
  36. 36.What is the supplement of 72° (in degrees)?
  37. 37.What is the supplement of 7° (in degrees)?
  38. 38.Are 22° and 158° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  39. 39.Two straight lines cross each other. One of the angles formed is 130°. What is the angle next to it on the same line (in degrees)?
  40. 40.Are 53° and 27° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. 158
  2. 133
  3. 129
  4. 97
  5. 46
  6. 43
  7. 135
  8. 63
  9. 127
  10. 163
  11. 65
  12. 59
  13. 124
  14. 37
  15. 167
  16. 40
  17. 27
  18. 65
  19. 44
  20. 76
  21. 144
  22. 101
  23. 26
  24. 40
  25. 10
  26. Complementary
  27. 121
  28. 81
  29. 140
  30. 66
  31. 73
  32. 52
  33. 40
  34. Neither
  35. 53
  36. 108
  37. 173
  38. Supplementary
  39. 50
  40. Neither

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