Dissecting a Latin Cross into a Greek Cross
This Demonstration shows Lindgren's dissection of a Latin cross into a Greek cross.
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.
 G. N. Frederickson, Dissections: Plane & Fancy, New York: Cambridge University Press, 1997 p. 144. www.cs.purdue.edu/homes/gnf/book.html.