← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 128 · 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 100° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 137°. What is the angle next to it on the same line (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 49°. What is the angle next to it on the same line (in degrees)?
  4. 4.What is the complement of 33° (in degrees)?
  5. 5.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  6. 6.What is the complement of 51° (in degrees)?
  7. 7.Are 35° and 167° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  8. 8.Two straight lines cross each other. One of the angles formed is 78°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the supplement of 110° (in degrees)?
  10. 10.What is the supplement of 142° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 130°. What is the angle next to it on the same line (in degrees)?
  12. 12.What is the complement of 9° (in degrees)?
  13. 13.What is the complement of 77° (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 141°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Two angles are supplementary. One is 100° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 158°. What is the angle next to it on the same line (in degrees)?
  17. 17.Are 44° and 46° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  18. 18.What is the complement of 48° (in degrees)?
  19. 19.What is the supplement of 126° (in degrees)?
  20. 20.What is the supplement of 50° (in degrees)?
  21. 21.What is the supplement of 39° (in degrees)?
  22. 22.Are 35° and 55° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  23. 23.Two angles are supplementary. One is 82° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the complement of 26° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 63°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.What is the supplement of 139° (in degrees)?
  27. 27.What is the supplement of 58° (in degrees)?
  28. 28.What is the complement of 13° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 73°. What is its corresponding angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 154°. What is the angle next to it on the same line (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
  33. 33.What is the complement of 40° (in degrees)?
  34. 34.Are 11° and 38° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  35. 35.What is the complement of 35° (in degrees)?
  36. 36.Are 17° and 14° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  37. 37.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the supplement of 171° (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its alternate interior angle (in degrees)?
  40. 40.What is the supplement of 127° (in degrees)?

Answer key

  1. 80
  2. 43
  3. 131
  4. 57
  5. Complementary
  6. 39
  7. Neither
  8. 78
  9. 70
  10. 38
  11. 50
  12. 81
  13. 13
  14. 141
  15. 140
  16. 22
  17. Complementary
  18. 42
  19. 54
  20. 130
  21. 141
  22. Complementary
  23. 131
  24. 64
  25. 117
  26. 41
  27. 122
  28. 77
  29. 73
  30. 51
  31. 26
  32. 86
  33. 50
  34. Neither
  35. 55
  36. Neither
  37. 49
  38. 9
  39. 140
  40. 53

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