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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 960 · 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 57°. What is the angle next to it on the same line (in degrees)?
  2. 2.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Are 16° and 164° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  6. 6.What is the complement of 78° (in degrees)?
  7. 7.What is the supplement of 141° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 58°. What is the angle next to it on the same line (in degrees)?
  9. 9.What is the complement of 47° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 48°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Are 13° and 39° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.What is the supplement of 21° (in degrees)?
  13. 13.Are 46° and 44° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.Are 42° and 48° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  15. 15.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  16. 16.What is the supplement of 11° (in degrees)?
  17. 17.What is the supplement of 143° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 118°. What is its alternate interior angle (in degrees)?
  19. 19.What is the complement of 21° (in degrees)?
  20. 20.What is the complement of 71° (in degrees)?
  21. 21.Are 29° and 151° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.Are 10° and 80° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  23. 23.Are 14° and 76° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 34°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the complement of 12° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 57°. What is its other interior angle on the same side of the transversal (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 45°. What is the angle next to it on the same line (in degrees)?
  29. 29.Are 55° and 86° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  30. 30.What is the complement of 29° (in degrees)?
  31. 31.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 91°. What is its corresponding angle (in degrees)?
  33. 33.Are 66° and 24° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  34. 34.What is the supplement of 51° (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One angle is 60°. What is its corresponding angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 42°. What is its corresponding angle (in degrees)?
  37. 37.What is the supplement of 97° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 74°. What is its corresponding angle (in degrees)?
  40. 40.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 123
  2. 49
  3. 86
  4. 130
  5. Supplementary
  6. 12
  7. 39
  8. 122
  9. 43
  10. 48
  11. Neither
  12. 159
  13. Complementary
  14. Complementary
  15. 24
  16. 169
  17. 37
  18. 118
  19. 69
  20. 19
  21. Supplementary
  22. Complementary
  23. Complementary
  24. 146
  25. 78
  26. 78
  27. 123
  28. 135
  29. Neither
  30. 61
  31. 73
  32. 91
  33. Complementary
  34. 129
  35. 60
  36. 42
  37. 83
  38. 51
  39. 74
  40. 96

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