SOLSTICE: An Electronic Journal of Geography and Mathematics. (Major articles are refereed; full electronic archives available) 
Figure 1. Pascal's Theorem. 
Figure 2. Brianchon's Theorem: dual of Pascal's Theorem. 
Fiugre 3a. This construction is the converse of Pascal's Theorem. Choose line z through L, leading to point C' on the conic through the 5 given points, A, B, C, A', B'. 
Figure 3b. This construction is independent of the choice of z. Choose a different line line z through N. It, too, will produce a point C' in a location different from that of Figure 3a but the new C' will also lie on the conic through the 5 given points! 
Part of the motivation for creating these animations lies in offering helpful graphics to illuminate notation. Another part of it is to build a foundation on which to continue ongoing research linking nonEuclidean geometries and the compression of (geo)graphics [Arlinghaus and Batty, 2005]  within the digital world but perhaps not beyond the "limits" of the Escher series! [Escher, Circle Limit series; kmz file link). 
Solstice:
An Electronic Journal of Geography and Mathematics,
