Sarah's gonna kill me for updating at work but it's ok..there's a brief downtime because I'm waiting on some automated processes to finish
a site, that apparently confused david and matt..about a triangle that creates a hole when the parts of shifted around..
http://www.ebaumsworld.com/trigrid.html It's not that confusing..assign b1 and b2 to the width of the two triangles, a1 and a1 to the height, and c1 and c2 to the length of the side caused by the angle
the main triangle always is b1 + b2 = b, a1 + a2 = a, and c1 + c2 = c..when you move the two triangles around, that formula stays the same, but the square gap created is represented by a height of a#, and a width of b#, so if b1 is on top, the width of the gap is b1 and the height is a2..it's pretty simple really