Dissections, - hingeable classes and more

A few of the following dissections where already shown or described on the webpage of the book Dissections Plane & Fancy, - but those informations where only viewable for a short time, which is one of the reasons why I decided to post my own webpage. Another reason is that there is a new book on the market that specializes on hinged dissections. Readers getting aquainted with the new techniques shown there could be able to find classes of hinged triangles and squares that are not inside that book, but already known to me.

Thus this webpage shows mainly hinged classes of polygons and additionaly
a few unhinged classes. I shall also show some special cases of hinged
and unhinged dissections of diverse polygons, - especially crosses, - and
a few of the more general dissections that are described as "special relationships"
in Dissections Plane & Fancy. It is unavoidable to take reference to
that book, because some of the material that I am posting can be considered
as corrections or improvements of the dissections already shown there.
I thus asked Anton Hanegraaf for his permission to show the T-slide, but
could not do the same for my own applications of two different methods
shown in Grerg Fredericksons book. I appley them to cases of which Frederickson
had evidently not known of, - and on the other hand, he did not care for
my permission to show the T-step (which I have discovered!) in his new
book Hinged Dissections: Swinging and Twisting. I thus take reference to
certain sections of that book too, - especially since two of my dissections
that I had sent to Greg Frederickson are to be seen in a somewhat different
manner there, even though Mr. Frederickson had known nothing alike before,
as he has stated in his signed letters to me (for more information to that
go to *Corrections and a new*... ; *New dissections of Greek
crosses*...)!

Table of contents (go to):

Corrections and a
new order to certain triangle classess

New dissections to
the special relationships of triangles

New dissections to
the special classes of triangles

New dissections to
the special relationships of squares

New dissections to
the special classes of squares

New dissections of
Greek crosses and Latin crosses

New dissections of
diverse polygons

Contact: Email: Enrico.Bernal@web.de

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