Adding the sides

1. A triangle has sides of 2 cm, 3 cm and 4 cm. What is its perimeter in cm?

Answer:

2. A square has sides of 6 cm. What is its perimeter?

• 12 cm
• 18 cm
• 24 cm
• 36 cm

3. A rectangle is 5 cm by 3 cm. What is its perimeter in cm?

Answer:

4. What do you do to find a perimeter?

• Add all the sides
• Multiply the sides
• Count the corners
• Add two sides

5. Perimeter is measured in units, not square units.

• True
• False

6. A pentagon has five equal sides of 3 cm. What is its perimeter in cm?

Answer:

7. A rectangle is 8 m by 2 m. What is its perimeter?

• 10 m
• 16 m
• 20 m
• 24 m

8. A hexagon has six equal sides of 2 cm. What is its perimeter in cm?

Answer:

9. A triangle has sides of 7 cm, 7 cm and 7 cm. What is its perimeter?

• 14 cm
• 21 cm
• 28 cm
• 49 cm

10. A square with sides of 4 cm has a perimeter of 16 cm.

• True
• False