Folding instructions for a) a square an b) an equilateral triangle

Basic Paper Piecing Instructions – Urban Loon Studios

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Printable instructions for drawing an equilateral triangle with compass and straightedge or ruler

Is it possible to create an equilateral triangle or a square from only straight cuts and glue if given any shape of paper? - Quora

E B Meenan's research works University of Leeds, Leeds and other places

How To Fold A Pocket Square - 9 Ways Of Folding A Handkerchief - RealMenRealStyle

Folding and Design: Paul Jackson

Optical simulation of the surface of a regular tetrahedron and a cube.

Is it possible to create an equilateral triangle or a square from only straight cuts and glue if given any shape of paper? - Quora

Folding an equilateral triangle