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Published byVanessa Logan Modified over 9 years ago
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Comparing Ratios of Perimeters and Areas Of Similar Figures
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Draw Similar Rectangles ABCD and EFGH whose lengths and widths are 16 and 12 and 12 and 9 respectively.
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16 12 9
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Compare the ratio of any two corresponding sides in simplest form. 16/12 = 4/3
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Find the Perimeters of each rectangle and express their ratio in simplest form. 56/42 = 4/3
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Find the Areas of each rectangle and express their ratio in simplest form. 192/108 = 16/9
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Make an observation about the relationship among the three simplified ratios. Corresponding sides…..4/3 Perimeters……………..4/3 Areas…………………..16/9 The ratio of the perimeters is equal to the ratio of the corresponding sides. The ratio of the areas is equal to the square of the ratio of the corresponding sides.
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