proof of a wonderful theorem of Dao Thanh Oai concerning the centers of the circumcircles of the six triangles each bounded by the lines containing three consecutive sides of the hexagon
proof of a wonderful theorem ofDao Thanh Oai concerning the centers of the circumcircles of the six triangleseach bounded by the lines containing three consecutive sides of the hexagon
Proof of a wonderful theorem of.Dao Thanh Oai concerning the centers of the circumcircles of the six triangles.Each bounded by the lines containing three consecutive sides of the hexagon.