GSPc CGiven triangle ABC, constructs the center of the nine point circle.                         A HxJX|M M%0 Hx܆@B HxJW\M M'0 Hx܆@j  M'  CPHxJWpM%M* Hx܆@k @M+0 lHxJXM)M-Hx܆@ m2rW0yEOxyIҷyJ 4m3rW0yEOxyҷyJ 4m1rW0yEOxy4ҷyJ 4uHHJa(M0M v0MMpM  GM@Mv@HxMMv HxMvwMPestination=%MpMu HxMuHxHMher-binaryinternal-ger-soundMsHx-movieinterxMrticleinternal-news-t-articlMrHxnews-next-thCenter of nine point circlexyҷyJ 4