Matt demonstrates that there are simple equations for many shapes, lines, squares, circles, quadrilaterals making use of the absolute value function. But that doesn't work for triangles unless your're willing to accept the occasional ...See moreMatt demonstrates that there are simple equations for many shapes, lines, squares, circles, quadrilaterals making use of the absolute value function. But that doesn't work for triangles unless your're willing to accept the occasional undefined point. But there are other functions in the mathematical tool box. Let's try the 'sign' function. Written by
David Foss
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