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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 1 · 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 69° and 111° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 141°. What is its other interior angle on the same side of the transversal (in degrees)?
  3. 3.Are 23° and 157° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  4. 4.Two straight lines cross each other. One of the angles formed is 35°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Are 61° and 34° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  6. 6.What is the supplement of 154° (in degrees)?
  7. 7.What is the supplement of 37° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 110°. What is its other interior angle on the same side of the transversal (in degrees)?
  9. 9.What is the supplement of 99° (in degrees)?
  10. 10.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the supplement of 19° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 115°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two angles are supplementary. One is 110° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 110°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 40°. What is its corresponding angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.What is the supplement of 95° (in degrees)?
  19. 19.Are 72° and 18° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 83°. What is its alternate interior angle (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 40°. What is its other interior angle on the same side of the transversal (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 105°. What is the angle vertically opposite to it (in degrees)?
  24. 24.What is the complement of 56° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 75°. What is its corresponding angle (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 50°. What is the angle next to it on the same line (in degrees)?
  27. 27.What is the complement of 45° (in degrees)?
  28. 28.What is the supplement of 120° (in degrees)?
  29. 29.Two angles are supplementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the complement of 61° (in degrees)?
  31. 31.Are 20° and 129° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.Two straight lines cross each other. One of the angles formed is 54°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the complement of 22° (in degrees)?
  34. 34.Are 75° and 15° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  35. 35.Two straight lines cross each other. One of the angles formed is 118°. What is the angle next to it on the same line (in degrees)?
  36. 36.Are 15° and 165° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  37. 37.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)?
  38. 38.What is the supplement of 61° (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 97°. What is its corresponding angle (in degrees)?
  40. 40.What is the supplement of 20° (in degrees)?

Answer key

  1. Supplementary
  2. 39
  3. Supplementary
  4. 35
  5. Neither
  6. 26
  7. 143
  8. 70
  9. 81
  10. 51
  11. 161
  12. 65
  13. 145
  14. 110
  15. 64
  16. 40
  17. 124
  18. 85
  19. Complementary
  20. 55
  21. 83
  22. 140
  23. 105
  24. 34
  25. 75
  26. 130
  27. 45
  28. 60
  29. 116
  30. 29
  31. Neither
  32. 126
  33. 68
  34. Complementary
  35. 62
  36. Supplementary
  37. 55
  38. 119
  39. 97
  40. 160

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