Calculating Perimeters of Polygons

The video tutorial explains how to calculate the perimeter of various shapes using a grid. It starts with a general explanation of perimeter calculation on a grid, followed by a detailed example of calculating the perimeter of a shape. The tutorial then covers the perimeter of a square, emphasizing that all sides are equal, and concludes with the perimeter of a regular pentagon, where all sides are of equal length.

What is the perimeter of a shape if each square in the grid is 1 by 1 centimeter?

• 30 centimeters

• 18 centimeters

• 12 centimeters

• 24 centimeters

How can you ensure not to double count when calculating the perimeter?

• Count only the longest sides

• Ignore the corners

• Start and end at the same point

• Count each side twice

Tags

CCSS.3.MD.D.8

If a shape's sides are 1, 2, 3, 1, 3, 1, 5, 2, 4, and 2 centimeters, what is its perimeter?

• 20 centimeters

• 22 centimeters

• 24 centimeters

• 26 centimeters

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CCSS.4.MD.A.3

What is the perimeter of a square with each side measuring 7 meters?

• 21 meters

• 28 meters

• 14 meters

• 35 meters

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CCSS.1.G.A.1

CCSS.2.G.A.1

How many sides does a square have?

• 5 sides

• 6 sides

• 4 sides

• 3 sides

Tags

CCSS.3.MD.D.8

What is the perimeter of a regular pentagon if each side is 2 units long?

• 14 units

• 12 units

• 8 units

• 10 units

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CCSS.2.G.A.1

How many sides does a regular pentagon have?

• 3 sides

• 4 sides

• 5 sides

• 6 sides

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CCSS.3.MD.D.8

If each side of a regular pentagon is 2 units, what is the formula to calculate its perimeter?

• 5 + 2

• 5 x 2

• 2 x 2

• 5 x 5

Tags

CCSS.3.MD.D.8

What is the length of each side of a regular pentagon if the total perimeter is 10 units?

• 1 unit

• 4 units

• 2 units

• 3 units

Tags

CCSS.3.MD.D.8