Details

To see the full dissection, begin with "Latin cross" selected and both sliders in the far-right position. Move slider 2, then slider 1 to the far-left position. Finally, select "Greek cross" and return both sliders to the far-right position.

Reference

[1] G. N. Frederickson, Dissections: Plane & Fancy, New York: Cambridge University Press, 1997 p. 144. www.cs.purdue.edu/homes/gnf/book.html.