More
circular tessellations (bis) 
by
G.A. Sarcone & M.J. Waeber 


Decorative
semicircles
The
3 curvilinear shapes illustrated below allow to make numerous tiling
dispositions. Can you prove that the first 2 semicircular figures are
of the same area and have the same perimeter?







































































































Let's
close the subject with a question: is it possible to transform an
ellipsoidal shape into a disc? (cf. to the diagram below) 










































































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