← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 937 · 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 148°. What is the angle next to it on the same line (in degrees)?
  2. 2.What is the complement of 18° (in degrees)?
  3. 3.Are 75° and 15° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  4. 4.What is the complement of 17° (in degrees)?
  5. 5.Are 78° and 12° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  6. 6.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 128°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the complement of 49° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 100°. What is the angle next to it on the same line (in degrees)?
  10. 10.What is the supplement of 54° (in degrees)?
  11. 11.Are 31° and 149° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.Two straight lines cross each other. One of the angles formed is 113°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 89°. What is its other interior angle on the same side of the transversal (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
  15. 15.What is the complement of 23° (in degrees)?
  16. 16.What is the complement of 50° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 52°. What is its corresponding angle (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 88°. What is the angle vertically opposite to it (in degrees)?
  19. 19.What is the supplement of 23° (in degrees)?
  20. 20.What is the supplement of 99° (in degrees)?
  21. 21.What is the supplement of 111° (in degrees)?
  22. 22.What is the complement of 44° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 34°. What is its alternate interior angle (in degrees)?
  24. 24.Are 47° and 101° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  25. 25.Two straight lines cross each other. One of the angles formed is 138°. What is the angle vertically opposite to it (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 80°. What is its corresponding angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 51°. What is the angle next to it on the same line (in degrees)?
  28. 28.What is the supplement of 72° (in degrees)?
  29. 29.Are 14° and 166° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.Are 25° and 46° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  31. 31.What is the complement of 69° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 70°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  34. 34.Are 15° and 165° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  35. 35.Are 35° and 5° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.What is the complement of 27° (in degrees)?
  37. 37.What is the supplement of 119° (in degrees)?
  38. 38.Are 18° and 72° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  39. 39.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
  40. 40.What is the complement of 66° (in degrees)?

Answer key

  1. 32
  2. 72
  3. Complementary
  4. 73
  5. Complementary
  6. 55
  7. 128
  8. 41
  9. 80
  10. 126
  11. Supplementary
  12. 67
  13. 91
  14. 32
  15. 67
  16. 40
  17. 52
  18. 88
  19. 157
  20. 81
  21. 69
  22. 46
  23. 34
  24. Neither
  25. 138
  26. 80
  27. 129
  28. 108
  29. Supplementary
  30. Neither
  31. 21
  32. 70
  33. 67
  34. Supplementary
  35. Neither
  36. 63
  37. 61
  38. Complementary
  39. 49
  40. 24

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