Math 5 · Unit 10: Angles · Cambridge Primary Maths Stage 5

Questions

1. 1. An angle of 45° is …

   • acute
   • right
   • straight
   • obtuse
   Check

2. 2. An angle of 120° is …

   • reflex
   • acute
   • right
   • obtuse
   Check

3. 3. A right angle is …

   • 180°
   • 100°
   • 90°
   • 45°
   Check

4. 4. Angles on a straight line add up to …

   • 360°
   • 100°
   • 180°
   • 90°
   Check

5. 5. Two angles on a straight line: one is 130°. What is the other?

   • 40°
   • 60°
   • 50°
   • 230°
   Check

6. 6. Two angles on a straight line: one is 75°. What is the other?

   • 115°
   • 15°
   • 105°
   • 285°
   Check

7. 7. Which tool measures angles?

   • thermometer
   • compass
   • ruler
   • protractor
   Check

8. 8. Which angle is closest to a right angle?

   • 120°
   • 45°
   • 10°
   • 88°
   Check

9. 9. Order from smallest: obtuse, acute, right angle

   • acute, obtuse, right angle
   • obtuse, right angle, acute
   • acute, right angle, obtuse
   • right angle, acute, obtuse
   Check

10. 10. Three angles on a straight line are 60°, 70° and ?

    • 40°
    • 50°
    • 230°
    • 60°
    Check

11. 11. How many degrees in a full turn?

    • 360°
    • 180°
    • 90°
    • 100°
    Check

12. 12. The clock shows 2 o'clock. What is the angle between the hands?

    • 60°
    • 120°
    • 90°
    • 30°
    Check

13. 13. An angle of 90° is …

    • obtuse
    • acute
    • straight
    • a right angle
    Check

14. 14. Which is an obtuse angle?

    • 95°
    • 90°
    • 30°
    • 85°
    Check

15. 15. Half a right angle is …

    • 90°
    • 45°
    • 30°
    • 180°
    Check