Parametric Coordinate Functions of the Letter F
The applet below illustrates parametric coordinate functions for the letter F.
Drag the vertices to change the size and orientation of the letter.
This is based on http://solvemymaths.com/2014/12/23/pis-parametric-coordinate-functions/
and http://demonputty.tumblr.com/post/100180566876/spring-of-mathematics-1ucasvb-pis-parametric