<center> **探究/ケーススタディ(4)...5心とその周辺 </center> <hr> - 5心 |@cs_gaishin.htm,外心|@cs_naishin.htm,内心|@cs_boushin.htm,傍心|@cs_suishin.htm,垂心|@cs_jushin.htm,重心| @/material/sh_5shin_trace.htm, 5心の軌跡 |外心|内心|重心|垂心|傍心| |#00141-trace-O|#00142-trace-I|#00143-trace-G|#00144-trace-G|#00145-trace-I2| -4心 -Euler線 </center>