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Unit 5 Quiz Review Dilations And Similar Figures

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1 – Dilate the figure by a scale factor of 200% Original Points A (0,4) B (-6,5) C (-8,5) D (-12, 4) New Points A ( ) B ( ) C ( ) D ( )

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2- What is the scale factor of the reduction of from X Y Z SR Q 4 in 3 in 1.5 in 2 in

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3- If I dilate a figure by 175% the new figure will be _______ than the original figure. This is called a(n) _______________.

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4- If I dilate a figure by 75% the new figure will be _________ than the original figure. This is called a(n) _______________.

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5- Dilate the point (3,7) by a scale factor of ½. Write the scale factor as a decimal and a percent. Write if the dilated figure will be bigger or smaller (in proper mathematical terms)

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6. In the diagram below, what is the ratio of the area of Triangle PQR to the area of Triangle LMN? 5 m. L M N P Q R 8 m. 4 m. 3 m. 5 m.

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7. If the sides of two similar rectangles have a ratio of, what is the ratio of their areas?

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8. If the ratio of two areas of two similar triangles is 1:16, what is the ratio of the sides of the similar triangles?

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9- Given the figures are similar, if the area of pentagon A is 12 square inches, what is the area of pentagon B?

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10- What is the scale factor of the enlargement?

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11-What is the length of the missing side if the ratio of the areas (B:A) is 9/16? 6 inx in

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12- What is the height of the tree? Trees shadow: 50 ft. Boys shadow: 10 ft. X ft. 4 ft.

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13- What relationship do you see between the ratio of sides of two similar rectangles and the ratio of the areas of two similar rectangles?

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