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Summary
DescriptionYff central triangle and its excircles.svg
English: Any triangle ABC is the triangle formed by the lines which are externally tangent to the three excircles of the Yff central triangle of triangle ABC.
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http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
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{{Information |Description = Any triangle ''ABC'' is the triangle formed by the lines which are externally tangent to the three excircles of the Yff central triangle of triangle ''ABC''. |Source = I (~~~) created this work entirely by myse...
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