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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 652 · 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 complement of 12° (in degrees)?
  2. 2.Two angles are supplementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  3. 3.What is the supplement of 159° (in degrees)?
  4. 4.What is the complement of 16° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its alternate interior angle (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its alternate interior angle (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 44°. What is its alternate interior angle (in degrees)?
  8. 8.Are 21° and 159° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  9. 9.What is the complement of 39° (in degrees)?
  10. 10.What is the supplement of 31° (in degrees)?
  11. 11.What is the supplement of 137° (in degrees)?
  12. 12.What is the supplement of 62° (in degrees)?
  13. 13.Are 32° and 58° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  14. 14.Two parallel lines are cut by a transversal. One angle is 103°. What is its corresponding angle (in degrees)?
  15. 15.What is the complement of 47° (in degrees)?
  16. 16.Are 22° and 68° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  17. 17.What is the supplement of 138° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 40°. What is its alternate interior angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 64°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.What is the complement of 82° (in degrees)?
  21. 21.What is the supplement of 156° (in degrees)?
  22. 22.Are 26° and 33° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  23. 23.What is the complement of 44° (in degrees)?
  24. 24.What is the complement of 9° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 129°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 86°. What is the angle next to it on the same line (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its alternate interior angle (in degrees)?
  28. 28.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 109°. What is its corresponding angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 99°. What is its alternate interior angle (in degrees)?
  31. 31.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the complement of 25° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
  34. 34.What is the supplement of 54° (in degrees)?
  35. 35.What is the supplement of 127° (in degrees)?
  36. 36.What is the supplement of 129° (in degrees)?
  37. 37.What is the supplement of 85° (in degrees)?
  38. 38.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the supplement of 48° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 93°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 78
  2. 100
  3. 21
  4. 74
  5. 51
  6. 50
  7. 44
  8. Supplementary
  9. 51
  10. 149
  11. 43
  12. 118
  13. Complementary
  14. 103
  15. 43
  16. Complementary
  17. 42
  18. 40
  19. 116
  20. 8
  21. 24
  22. Neither
  23. 46
  24. 81
  25. 51
  26. 94
  27. 111
  28. 67
  29. 109
  30. 99
  31. 122
  32. 65
  33. 95
  34. 126
  35. 53
  36. 51
  37. 95
  38. 133
  39. 132
  40. 87

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