"May 24, 2021, 3:26 PMInversion about $(O)$ preserves $(BDA_1)$, hence $(O)$ is a $B$-appolonian circle of $BDA_1$ with isodynamic points on it. The same with other triangles.", zuss77.
"May 24, 2021, 3:26 PM
ReplyDeleteInversion about $(O)$ preserves $(BDA_1)$, hence $(O)$ is a $B$-appolonian circle of $BDA_1$ with isodynamic points on it. The same with other triangles.", zuss77.