Create a free account now and get 3 full lessons, completely free. Get my 3 free lessons

UK
Practise online insteadThe answer key prints on page 2.

Complementary angles

Year 8 maths · Fieldbook Learning

Name ______________________ Date __________

Complementary angles add up to 90 degrees.

  1. Two angles are complementary. One angle is 28°. How many degrees is the other angle?
  2. Two angles are complementary. One angle is 64°. How many degrees is the other angle?
  3. Two angles are complementary. One angle is 48°. How many degrees is the other angle?
  4. Two angles are complementary. One angle is 74°. How many degrees is the other angle?
  5. Two angles are complementary. One angle is 52°. How many degrees is the other angle?
  6. Two angles are complementary. One angle is 65°. How many degrees is the other angle?
  7. Two angles are complementary. One angle is 10°. How many degrees is the other angle?
  8. Two angles are complementary. One angle is 36°. How many degrees is the other angle?
  9. Two angles are complementary. One angle is 15°. How many degrees is the other angle?
  10. Two angles are complementary. One angle is 17°. How many degrees is the other angle?
  11. Two angles are complementary. One angle is 41.5°. How many degrees is the other angle?
  12. Two angles are complementary. One angle is 45°. How many degrees is the other angle?
  13. Two angles are complementary. One angle is 27.5°. How many degrees is the other angle?
  14. Two angles are complementary. One angle is 83°. How many degrees is the other angle?
  15. Two angles are complementary. One angle is 26.5°. How many degrees is the other angle?
  16. Two angles are complementary. One angle is 42°. How many degrees is the other angle?
  17. Two angles are complementary. One angle is 8.5°. How many degrees is the other angle?
  18. Two angles are complementary. One angle is 18°. How many degrees is the other angle?
  19. Two angles are complementary. One angle is 67.5°. How many degrees is the other angle?
  20. Two angles are complementary. One angle is 60.5°. How many degrees is the other angle?
More free practice: fieldbooklearning.com/uk/practice/year-8/complementary-angles/

Play it as a quiz game

20 of these questions as multiple choice, with near-miss wrong answers, ready for Kahoot or Blooket.

  1. Download the game's own question template: in Kahoot, Add question → Import spreadsheet; in Blooket, Create a set → Spreadsheet import.
  2. Click the matching button below, then click the first empty question row of the template and paste.
  3. Save the template (Kahoot needs .xlsx, Blooket .csv) and upload it.
Download CSV

Answer key: Complementary angles

  1. 62
  2. 26
  3. 42
  4. 16
  5. 38
  6. 25
  7. 80
  8. 54
  9. 75
  10. 73
  11. 48.5
  12. 45
  13. 62.5
  14. 7
  15. 63.5
  16. 48
  17. 81.5
  18. 72
  19. 22.5
  20. 29.5