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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 271 · 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 straight lines cross each other. One of the angles formed is 122°. What is the angle next to it on the same line (in degrees)?
  2. 2.Are 58° and 32° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  3. 3.What is the complement of 79° (in degrees)?
  4. 4.What is the complement of 52° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Are 17° and 163° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 81°. What is its alternate interior angle (in degrees)?
  8. 8.Are 26° and 64° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  9. 9.Are 11° and 79° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  10. 10.What is the complement of 22° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 154°. What is the angle next to it on the same line (in degrees)?
  12. 12.What is the complement of 18° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 120°. What is its alternate interior angle (in degrees)?
  14. 14.What is the supplement of 146° (in degrees)?
  15. 15.Two angles are supplementary. One is 134° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 60°. What is its corresponding angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 31°. What is its corresponding angle (in degrees)?
  18. 18.Are 72° and 108° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.Two parallel lines are cut by a transversal. One angle is 148°. What is its corresponding angle (in degrees)?
  20. 20.What is the supplement of 57° (in degrees)?
  21. 21.Two angles are supplementary. One is 110° more than the other. What is the bigger angle (in degrees)?
  22. 22.Are 53° and 141° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  23. 23.Two parallel lines are cut by a transversal. One angle is 47°. What is its corresponding angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 36°. What is the angle next to it on the same line (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 143°. What is the angle vertically opposite to it (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 128°. What is the angle vertically opposite to it (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 127°. What is the angle next to it on the same line (in degrees)?
  28. 28.What is the supplement of 104° (in degrees)?
  29. 29.Are 64° and 26° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  30. 30.Are 73° and 106° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  31. 31.Are 53° and 10° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.What is the supplement of 50° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 36°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Are 38° and 142° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  35. 35.What is the supplement of 24° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 44°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  38. 38.Are 44° and 46° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  39. 39.Two parallel lines are cut by a transversal. One angle is 126°. What is its corresponding angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 97°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 58
  2. Complementary
  3. 11
  4. 38
  5. 143
  6. Supplementary
  7. 81
  8. Complementary
  9. Complementary
  10. 68
  11. 26
  12. 72
  13. 120
  14. 34
  15. 157
  16. 60
  17. 31
  18. Supplementary
  19. 148
  20. 123
  21. 145
  22. Neither
  23. 47
  24. 144
  25. 143
  26. 128
  27. 53
  28. 76
  29. Complementary
  30. Neither
  31. Neither
  32. 130
  33. 36
  34. Supplementary
  35. 156
  36. 136
  37. 125
  38. Complementary
  39. 126
  40. 97

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