You can even solve cubic equations with origami[1], which is what allows you to double a cube and trisect an angle by adding folding to the usual tools of compa

You can even solve cubic equations with origami[1], which is what allows you to double a cube and trisect an angle by adding folding to the usual tools of compass and straightedge. (It's still not enough to square the circle.) [1]: http://math.stackexchange.com/questions/581958/solving-cubic-equations-with-origami http://math.stackexchange.com/questions/581958/solving-cubic...