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The two regular pentagons shown at the left are similar. What is the ratio of area of the larger pentagon to the area of the smaller pentagon?

should i use tan?

 Jan 17, 2020
 #1
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The areas of two similar polygons (and all regular pentagons are similar polygons) has the same ratio as the squares of the corresponding sides.

 Jan 18, 2020
 #2
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oh ok! i got it now! thanks

xxJenny1213xx  Jan 19, 2020

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