|Activity: A Japanese Temple Problem| |Go
to:||http://www.pballew.net/GS_EXP19.html (opens a new window)|
|Description:||In this guided Geometer's Sketchpad exploration,
students use their knowledge of tangent circles to discover a
relationship between the radii of three circles which are
mutually tangent to each other and an external line. This proof
was drawn up on a wooden block and hung in a temple in Gunma
prefecture of Japan in the early 1800's . The practice of
hanging such proofs was called Sangaku. |Author:||Pat Ballew:
Explorations in Geometry| |Cost:||Does not require payment for
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