← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 390 · 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 13° (in degrees)?
  2. 2.Are 27° and 137° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  3. 3.What is the complement of 44° (in degrees)?
  4. 4.What is the supplement of 158° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 82°. What is the angle vertically opposite to it (in degrees)?
  6. 6.What is the complement of 21° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 108°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the complement of 30° (in degrees)?
  9. 9.What is the supplement of 29° (in degrees)?
  10. 10.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the complement of 78° (in degrees)?
  12. 12.What is the supplement of 125° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 35°. What is the angle next to it on the same line (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 59°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the complement of 52° (in degrees)?
  17. 17.What is the complement of 41° (in degrees)?
  18. 18.Are 12° and 88° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 42°. What is its alternate interior angle (in degrees)?
  22. 22.What is the complement of 49° (in degrees)?
  23. 23.Are 34° and 56° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  24. 24.What is the complement of 54° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 90°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the supplement of 109° (in degrees)?
  27. 27.What is the complement of 14° (in degrees)?
  28. 28.What is the complement of 9° (in degrees)?
  29. 29.What is the complement of 16° (in degrees)?
  30. 30.What is the complement of 43° (in degrees)?
  31. 31.Are 16° and 74° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.Are 48° and 42° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  33. 33.Two straight lines cross each other. One of the angles formed is 50°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 49°. What is its corresponding angle (in degrees)?
  35. 35.What is the supplement of 77° (in degrees)?
  36. 36.Are 70° and 110° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  37. 37.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the supplement of 76° (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 94°. What is the angle next to it on the same line (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 77
  2. Neither
  3. 46
  4. 22
  5. 82
  6. 69
  7. 108
  8. 60
  9. 151
  10. 67
  11. 12
  12. 55
  13. 145
  14. 59
  15. 135
  16. 38
  17. 49
  18. Neither
  19. 57
  20. 70
  21. 42
  22. 41
  23. Complementary
  24. 36
  25. 90
  26. 71
  27. 76
  28. 81
  29. 74
  30. 47
  31. Complementary
  32. Complementary
  33. 50
  34. 49
  35. 103
  36. Supplementary
  37. 47
  38. 104
  39. 86
  40. 24

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets