perplexus.info :: Shapes : Pentagon Ratio

Pentagon Ratio (Posted on 2013-03-30)

A piece of paper has the precise shape of a regular pentagon. The paper is folded such that a vertex of the pentagon coincides with the midpoint of that side of the pentagon which is farthest from the said vertex.

Determine the ratio of the length of the crease to the length of a side of the pentagon.

Submitted by K Sengupta

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Solution: (Hide)

The required ratio is 3/2..

For a detailed explanation, refer to the solution submitted by Jer in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Solution.	Jer	2013-04-01 13:06:07
Geometers' Sketchpad says...	Charlie	2013-03-30 12:59:56

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