Understanding the Perimeter of a Rectangle

The video tutorial explains how to find the perimeter of a rectangle. It covers the basic properties of rectangles, such as congruent opposite sides and right angles. The tutorial demonstrates two methods for calculating the perimeter: adding all four sides or using the formula 2(length) + 2(width). It also addresses a special case where the diagonal and one side are given, using the Pythagorean theorem to find the missing side and then calculating the perimeter.

What is the property of opposite sides in a rectangle?

• They are congruent.

• They are parallel.

• They are perpendicular.

• They are unequal.

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CCSS.4.MD.A.3

How do you calculate the perimeter of a rectangle by adding sides?

• Add the length and width.

• Add all four sides together.

• Multiply the length by the width.

• Subtract the width from the length.

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CCSS.4.MD.A.3

What is the formula for the perimeter of a rectangle?

• Length plus width.

• Two lengths plus two widths.

• Length minus width.

• Length times width.

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CCSS.8.G.B.8

In a special case, if given a diagonal and one side of a rectangle, which theorem helps find the missing side?

• Pythagorean theorem

• Area theorem

• Similarity theorem

• Congruence theorem

What is the hypotenuse in a right triangle?

• The longest side

• The side opposite the smallest angle

• The shortest side

• The middle side

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CCSS.8.G.B.8

If one side of a rectangle is 12 and the diagonal is 13, what is the length of the other side?

• 6

• 5

• 4

• 3

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CCSS.8.G.B.8

After finding the missing side using the Pythagorean theorem, how do you find the perimeter?

• Add the diagonal to the sides.

• Add all four sides together.

• Multiply the sides by the diagonal.

• Subtract the diagonal from the sides.

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CCSS.4.MD.A.3

What is the perimeter of a rectangle with sides 5 and 12?

• 44

• 40

• 34

• 30

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CCSS.4.MD.A.3

Which method is NOT used to find the perimeter of a rectangle?

• Using the Pythagorean theorem

• Using the formula 2L + 2W

• Subtracting the width from the length

• Adding all sides

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CCSS.3.MD.D.8

What is the main takeaway from the video on finding the perimeter of a rectangle?

• The diagonal is always needed.

• Only use the formula method.

• Only use the Pythagorean theorem.

• Use either adding sides or the formula method.

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CCSS.3.MD.D.8