Puzzle: Nagel Point Theorem, 22 piece Polygons. HTML5 canvas for iPad and touch Devices

Solve the puzzle about Nagel Point. Click and drag with your mouse or finger to move the pieces. (The puzzle requires HTML5 canvas element enable browser.)

The lines connecting each vertex of a triangle with the point of tangency between the opposite side and the opposite excircle are concurrent at a point called the Nagel Point.