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Try this site here>>>http://www.mathsisfun.com/quadrilaterals.htmlQuadrilateral just means "four sides"
(quad means four, lateral means side).
Any four-sided shape is a Quadrilateral.
But the sides have to be straight, and it has to be 2-dimensional.
Properties
- Four sides (or edges)
- Four vertices (or corners).
- The interior angles add up to 360 degrees:

| 13 years ago. Rating: 3 | |
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Vinny
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My head hurts..
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lindilou ...killing 'em with over-ampage!!!
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jhharlan
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I'm with @Vinny..........
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28 days ago. Rating: 2
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lindilou ...now we know what happened to Headless man!!LOL!!
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