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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 416 · 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 14° and 76° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.What is the supplement of 104° (in degrees)?
  3. 3.What is the complement of 23° (in degrees)?
  4. 4.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the complement of 84° (in degrees)?
  6. 6.Are 32° and 148° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Two straight lines cross each other. One of the angles formed is 110°. What is the angle next to it on the same line (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the supplement of 40° (in degrees)?
  10. 10.Are 39° and 51° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  11. 11.Are 21° and 76° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  12. 12.What is the complement of 71° (in degrees)?
  13. 13.What is the supplement of 21° (in degrees)?
  14. 14.What is the supplement of 156° (in degrees)?
  15. 15.What is the supplement of 32° (in degrees)?
  16. 16.What is the supplement of 149° (in degrees)?
  17. 17.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 26°. What is the angle next to it on the same line (in degrees)?
  19. 19.Are 67° and 23° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  20. 20.Are 10° and 80° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.What is the complement of 82° (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 42°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 49°. What is its corresponding angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One angle is 94°. What is its corresponding angle (in degrees)?
  25. 25.What is the complement of 80° (in degrees)?
  26. 26.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the supplement of 119° (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 81°. What is its other interior angle on the same side of the transversal (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 22°. What is the angle next to it on the same line (in degrees)?
  30. 30.Are 49° and 41° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  31. 31.What is the supplement of 144° (in degrees)?
  32. 32.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its alternate interior angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 57°. What is its alternate interior angle (in degrees)?
  35. 35.What is the complement of 6° (in degrees)?
  36. 36.Are 69° and 111° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  37. 37.What is the complement of 26° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 30°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 122°. What is its other interior angle on the same side of the transversal (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 150°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. Complementary
  2. 76
  3. 67
  4. 92
  5. 6
  6. Supplementary
  7. 70
  8. 60
  9. 140
  10. Complementary
  11. Neither
  12. 19
  13. 159
  14. 24
  15. 148
  16. 31
  17. 119
  18. 154
  19. Complementary
  20. Complementary
  21. 8
  22. 42
  23. 49
  24. 94
  25. 10
  26. 72
  27. 61
  28. 99
  29. 158
  30. Complementary
  31. 36
  32. 53
  33. 111
  34. 57
  35. 84
  36. Supplementary
  37. 64
  38. 150
  39. 58
  40. 30

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