A generalization Kosnita theorem

O is center of circle throughs six points (Ac,Ab,Cb,Ca,Ba,Bc). C1,B1,A1 is center of circle through (OAcBc), (OAbCb), (OCaBa) . respectively. AcBc,AbCb,CaBa create a triangle ABC (show in the figure). Then AA1,BB1,CC1 are concurrent
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Đào Thanh Oai —

 
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Activity
Tags
collinear  concurrent  konista  theorem 
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19+
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English (United Kingdom)
 
 
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