References: H. Fukagawa & D. Pedoe
"Japanese Temple Geometry Problems Sangaku" Winnipeg, Canada,
1989.
Sangaku or San Gaku are Japanese
geometrical problems in Euclidean geometry on wooden tablets
created during the Edo period (16031867) by members of all
social classes.
I have used
Geometry Expressions to visualize these geometric forms and
check out a variety of conjectures. Geometry Expressions is the
world's first Interactive Symbolic Geometry System. This means:
Geometric figures can be defined by either Symbolic Constraints
or numeric locations.
You can
download Geometry Expressions 1.0 Free Trial. It is a fully
featured 30 day evaluation copy of the software. All
constraints, constructions and measurements are available for
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