Perimeter of Squares and Rectangles

The length of a boundary of a closed shape is called the:

• Area

• Perimeter

• Width

• Length

True or False: We always include a unit of measure (cm, in., ft, etc.) when we solve perimeter.

• True

• False

What is the perimeter of this image?

• 8 units

• 4 units

• 12 units

• 16 units

What is the perimeter of this square?

• 3 units

• 9 units

• 10 units

• 12 units

What is the perimeter of the shaded rectangle?

• 16 units

• 12 units

• 6 units

• 2 units

What is the perimeter of this rectangle?

• 21 cm

• 42 cm

• 12 cm

• 9 cm

Tags

CCSS.4.MD.A.3

Which is NOT a way to find the perimeter of this square?

• 3 + 3 + 3 + 3 = 12 units

• 3 x 4 = 12 units

• 3 x 3 = 9 units

Tags

CCSS.4.MD.A.3

Which is NOT a way to find the perimeter of this rectangle?

• 4 + 4 + 2 + 2 = 12 units

• (2 x 4) + (2 x 2) = 12 units

• 2 x (4 + 2) = 12 units

• 2 x 4 = 8 units

Tags

CCSS.4.MD.A.3

What is the perimeter of this rectangle?

• 26 cm

• 13 cm

• 9 cm

• 4 cm

Tags

CCSS.4.MD.A.3

How do I abbreviate the word length in perimeter formulas?

• w

• l

• len.

• wid.

Tags

CCSS.4.MD.A.3