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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 959 · 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 79° and 67° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  2. 2.Two parallel lines are cut by a transversal. One angle is 82°. What is its corresponding angle (in degrees)?
  3. 3.Are 46° and 134° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  4. 4.Two straight lines cross each other. One of the angles formed is 81°. What is the angle next to it on the same line (in degrees)?
  5. 5.What is the supplement of 83° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 34°. What is its corresponding angle (in degrees)?
  7. 7.Are 39° and 141° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  8. 8.Two straight lines cross each other. One of the angles formed is 42°. What is the angle next to it on the same line (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 99°. What is its alternate interior angle (in degrees)?
  10. 10.Are 61° and 29° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  11. 11.What is the complement of 13° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 95°. What is its corresponding angle (in degrees)?
  13. 13.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One angle is 150°. What is its corresponding angle (in degrees)?
  16. 16.Two angles are supplementary. One is 106° 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 129°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 72°. What is the angle vertically opposite to it (in degrees)?
  19. 19.What is the supplement of 143° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 118°. What is the angle vertically opposite to it (in degrees)?
  21. 21.What is the complement of 20° (in degrees)?
  22. 22.What is the complement of 47° (in degrees)?
  23. 23.Two angles are supplementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the complement of 81° (in degrees)?
  25. 25.What is the supplement of 72° (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 96°. What is the angle next to it on the same line (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 108°. What is the angle next to it on the same line (in degrees)?
  28. 28.What is the complement of 32° (in degrees)?
  29. 29.What is the complement of 79° (in degrees)?
  30. 30.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  31. 31.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)?
  32. 32.Are 64° and 99° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  33. 33.Are 30° and 150° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.Two angles are supplementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  35. 35.Are 45° and 45° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 42°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.What is the supplement of 65° (in degrees)?
  38. 38.What is the complement of 6° (in degrees)?
  39. 39.What is the complement of 46° (in degrees)?
  40. 40.What is the supplement of 172° (in degrees)?

Answer key

  1. Neither
  2. 82
  3. Supplementary
  4. 99
  5. 97
  6. 34
  7. Supplementary
  8. 138
  9. 99
  10. Complementary
  11. 77
  12. 95
  13. 68
  14. 49
  15. 150
  16. 143
  17. 129
  18. 72
  19. 37
  20. 118
  21. 70
  22. 43
  23. 109
  24. 9
  25. 108
  26. 84
  27. 72
  28. 58
  29. 11
  30. 63
  31. 50
  32. Neither
  33. Supplementary
  34. 94
  35. Complementary
  36. 138
  37. 115
  38. 84
  39. 44
  40. 8

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