Draw a circle and arrange six circles
tangent to it such that they touch both the original circle and
their two neighbors. Then the three lines joining opposite
points of tangency concur. Click the Next button
above
to start the stepbystep illustration. See also:
Seven Circles theorem: Typography
in motion.
Reference: Evelyn, C. J. A., MoneyCoutts, G. B. &
Tyrrell, J. A. (1974), The Seven Circles Theorem and other New Theorems, Stacey
International, London
