Grade 8 McGraw Hill Glencoe - Answer Keys Answer keys

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Grade 8 McGraw Hill Glencoe - Answer Keys

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Guided Practice

For each pair of similar figures, find the perimeter of the second figure.

feet

Question 3 (request help)
Julie is enlarging a digital photograph on her computer. The original photograph is 5 inches by 7 inches. If she enlarges the dimensions 1.5 times, what will be the perimeter and area of the new image?

	Perimeter:		in.
	Area:		\(\text{in.}^{2}\)

Question 4 (request help)
Logan is flying a kite that is made up of three similar rectangles. The sides of the three rectangles are in the ratio 1:2:3. If the area of the smallest rectangle is 72 square inches, what are the areas of the other two rectangles?

	2nd rectangle:		\(\text{in.}^{2}\)
	3rd rectangle:		\(\text{in.}^{2}\)

Question 5 (request help)
Building on the Essential Question If you know two figures are similar and you are given the area of both figures, how can you determine the scale factor of the similarity?
Type below: