Math 5 · Unit 2: 2D shape and pattern · Cambridge Primary Maths Stage 5

Questions

1. 1. A triangle has 3 equal sides. What is it called?

   • right-angled
   • scalene
   • equilateral
   • isosceles
   Check

2. 2. A triangle has exactly 2 equal sides. What is it called?

   • equilateral
   • isosceles
   • right-angled
   • scalene
   Check

3. 3. A triangle has no equal sides. What is it called?

   • isosceles
   • scalene
   • regular
   • equilateral
   Check

4. 4. Sides 5 cm, 5 cm and 3 cm. Which triangle?

   • scalene
   • equilateral
   • isosceles
   Check

5. 5. Sides 4 cm, 6 cm and 7 cm. Which triangle?

   • equilateral
   • scalene
   • isosceles
   Check

6. 6. How many equal angles does an equilateral triangle have?

   • 0
   • 1
   • 3
   • 2
   Check

7. 7. What do the angles of a triangle add up to?

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

8. 8. Each angle of an equilateral triangle is …

   • 45°
   • 180°
   • 60°
   • 90°
   Check

9. 9. A triangle has one 90° angle. What kind is it?

   • acute only
   • equilateral
   • obtuse
   • right-angled
   Check

10. 10. Can a triangle have two right angles?

    • Yes
    • No
    Check

11. 11. An isosceles triangle has two equal angles of 70°. What is the third angle?

    • 20°
    • 110°
    • 70°
    • 40°
    Check

12. 12. Can a right-angled triangle also be isosceles?

    • Yes
    • No
    Check

13. 13. Which triangle has 3 lines of symmetry?

    • scalene
    • right-angled scalene
    • equilateral
    • isosceles
    Check

14. 14. How many lines of symmetry does a scalene triangle have?

    • 0
    • 2
    • 3
    • 1
    Check

15. 15. Two angles of a triangle are 50° and 60°. What is the third?

    • 80°
    • 60°
    • 110°
    • 70°
    Check