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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 380 · 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 105° (in degrees)?
  2. 2.What is the complement of 78° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 76°. What is its corresponding angle (in degrees)?
  4. 4.Are 46° and 134° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.What is the supplement of 63° (in degrees)?
  6. 6.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 60°. What is its corresponding angle (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its other interior angle on the same side of the transversal (in degrees)?
  9. 9.What is the complement of 9° (in degrees)?
  10. 10.Are 65° and 78° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  11. 11.Are 55° and 152° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.Are 25° and 65° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  13. 13.What is the complement of 12° (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 80°. What is the angle vertically opposite to it (in degrees)?
  15. 15.What is the supplement of 137° (in degrees)?
  16. 16.Are 17° and 163° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  17. 17.Are 33° and 57° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  18. 18.Two straight lines cross each other. One of the angles formed is 50°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 160°. What is the angle next to it on the same line (in degrees)?
  20. 20.What is the complement of 14° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 99°. What is its corresponding angle (in degrees)?
  22. 22.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 76° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 24°. What is the angle next to it on the same line (in degrees)?
  25. 25.Are 15° and 165° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  26. 26.What is the complement of 11° (in degrees)?
  27. 27.Are 42° and 48° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  28. 28.What is the supplement of 103° (in degrees)?
  29. 29.What is the supplement of 170° (in degrees)?
  30. 30.What is the complement of 43° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 115°. What is the angle next to it on the same line (in degrees)?
  32. 32.What is the complement of 15° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 134°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.Are 59° and 31° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.What is the supplement of 26° (in degrees)?
  37. 37.Are 11° and 14° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  38. 38.Two straight lines cross each other. One of the angles formed is 143°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 145°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 75
  2. 12
  3. 76
  4. Supplementary
  5. 117
  6. 107
  7. 60
  8. 35
  9. 81
  10. Neither
  11. Neither
  12. Complementary
  13. 78
  14. 80
  15. 43
  16. Supplementary
  17. Complementary
  18. 50
  19. 20
  20. 76
  21. 99
  22. 53
  23. 14
  24. 156
  25. Supplementary
  26. 79
  27. Complementary
  28. 77
  29. 10
  30. 47
  31. 65
  32. 75
  33. 124
  34. 46
  35. Complementary
  36. 154
  37. Neither
  38. 37
  39. 63
  40. 35

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