Online geometry tutor
Instructions Next screen: Next button
or Right arrow, Previous screen: Previous button or Left arrow,
First screen: Up arrow, Last screen: Down Arrow
Reference: Evelyn, C. J. A., Money-Coutts, G. B. &
Tyrrell, J. A. (1974), The Seven Circles Theorem and other New Theorems, Stacey
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.
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
you to use.