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 Sujet: origami
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 A 1.5:1 rectangle 2009-03-23 melody pose la question :I have an origami model that says to use a 1.5:1 rectangle. I don't understand how to calculate the size of paper I need to use. Surely there is a formula to calculate this ratio? Thanks for your help.Penny Nom lui répond. The volume of a tetrahedron 2004-02-03 Joseph pose la question : How do I calculate the volume of a bird tetrahedron. I'm trying to find out to get extra credit. I came with this idea while making a origami tetrahedron. Joseph P.S. Do you by any chance have instructions for orig ami figures. If you do, please send me some. Thanks! Penny Nom lui répond. Can a square be a rhombus? 2003-03-04 Beth pose la question :Can a square be a rhombus? Some sources say yes, some say no. Some sources define a rhombus as a quadrilateral and parallelogram with equal sides, but without right angles. Some sources say a square is a special case of a rhombus. Clarity, please!Walter Whiteley lui répond.

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