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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 459 · 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 97° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its alternate interior angle (in degrees)?
  3. 3.Are 44° and 136° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  4. 4.Are 60° and 120° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 54°. What is its alternate interior angle (in degrees)?
  6. 6.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)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
  8. 8.What is the supplement of 69° (in degrees)?
  9. 9.Are 42° and 14° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 70°. What is its other interior angle on the same side of the transversal (in degrees)?
  11. 11.Are 38° and 142° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the complement of 65° (in degrees)?
  16. 16.What is the complement of 31° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 131°. What is its corresponding angle (in degrees)?
  18. 18.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)?
  19. 19.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  20. 20.What is the complement of 52° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 126°. What is its corresponding angle (in degrees)?
  22. 22.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 83° (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 95°. What is its alternate interior angle (in degrees)?
  25. 25.What is the complement of 70° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 52°. What is its alternate interior angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 87°. What is the angle next to it on the same line (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 98°. What is the angle next to it on the same line (in degrees)?
  29. 29.Are 35° and 145° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  30. 30.Two straight lines cross each other. One of the angles formed is 146°. What is the angle vertically opposite to it (in degrees)?
  31. 31.What is the complement of 11° (in degrees)?
  32. 32.Are 32° and 58° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  33. 33.What is the complement of 56° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 65°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One angle is 82°. What is its corresponding angle (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 99°. What is the angle next to it on the same line (in degrees)?
  37. 37.What is the complement of 20° (in degrees)?
  38. 38.What is the complement of 29° (in degrees)?
  39. 39.What is the complement of 41° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 142°. What is its alternate interior angle (in degrees)?

Answer key

  1. 83
  2. 41
  3. Supplementary
  4. Supplementary
  5. 54
  6. 130
  7. 32
  8. 111
  9. Neither
  10. 110
  11. Supplementary
  12. 117
  13. 141
  14. 134
  15. 25
  16. 59
  17. 131
  18. 127
  19. 54
  20. 38
  21. 126
  22. 69
  23. 7
  24. 95
  25. 20
  26. 52
  27. 93
  28. 82
  29. Supplementary
  30. 146
  31. 79
  32. Complementary
  33. 34
  34. 65
  35. 82
  36. 81
  37. 70
  38. 61
  39. 49
  40. 142

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