Go Math Perimeter

Perimeter

Module 3 Lesson 1

We can calculate the perimeter of this square by adding 5+5+5+5 or 5x4 ...

which equals 20.

Let's answer some questions.

Ready?

Find the perimeter for this square and mark your answer on the next slide.

Multiple Choice

What is the perimeter of this square?

• 3 units

• 6 units

• 9 units

• 12 units

What is the perimeter of this triangle?

Be ready to answer on the next slide.

Multiple Choice

What's the perimeter of this triangle?

• 10 cm

• 11 cm

• 12 cm

• 13 cm

What's the perimeter of this triangle?

Be ready to answer on the next slide.

Multiple Choice

What's the perimeter of this triangle?

• 18 inches

• 18 feet

• 18 cm

What's the perimeter of this pentagon?

Be ready to choose your answer on the next slide.

Multiple Choice

What is the perimeter of this pentagon?

• 15 units

• 12 units

• 9 units

• 6 units

Let's challenge ourselves a little bit!

• Not all of the sides are labeled.

• You can still figure out the lengths of the unlabeled sides by looking at the sides on the opposite side.

Multiple Choice

What is the perimeter of this shape?

• 11 inches

• 22inches

LAST QUESTION!

What's the perimeter of this rectangle?

Multiple Choice

What's the perimeter of this rectangle?

• 26 cm

• 27 cm

• 28 cm