Proof? A perfect Parallelogram from a Wacky Shape

I read this one from a blog I had visited yesterday. They just show that we can construct a perfect parallelogram out from deformed quadrilateral shapes. However, there is no proof included.

Can you give me proof for this? How is it really possible?

Easy Math Editor

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Comments

This is a good explaination for this phenomenum.

Bob Krueger - 7 years, 11 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$