| 词条 | Woo circles |
| 释义 |
In geometry, the Woo circles, introduced by Peter Y. Woo, are a set of infinitely many Archimedean circles. ConstructionForm an arbelos with the two inner semicircles tangent at point C. Let m denote any nonnegative real number. Draw two circles, with radii m times the radii of the smaller two arbelos semicircles, centered on the arbelos ground line, also tangent to each other at point C and with radius m times the radius of the corresponding small arbelos arc. Any circle centered on the Schoch line and externally tangent to the circles is a Woo circle.[1] See also
References1. ^{{Cite web |url=http://www.retas.de/thomas/arbelos/woo.html |title=Arbelos - The Woo Circles |accessdate=2008-06-05 |author=Thomas Schoch |date=2007}} {{Elementary-geometry-stub}} 2 : Arbelos|Circles |
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