- Feb 1 2:01 AM2012/2/1 Alexey Zaslavsky <zasl@...>

> Let A_0, B_0, C_0 be the midpoints of sides BC, CA, AB; P be an arbitrary

... and which is the locus of the point of concurrence, as P moves on the

> point on the Euler line of triangle ABC and A_1, B_1, C_1 be the

> projections

> of circumcenter O to AP, BP, CP. Then A_0A_1, B_0B_1, C_0C_1 concur.

>

>

>

Euler line?

APH

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