Advanced Geometric Problem & Solution (Twice a week update) Now 4502 problems posted.
<Cir-2024-774>, hint
Suppose a line through M, perpendicular to AC at N, which cuts O, circumcenter,
the midpoint of BD.. BM=ME, BO=OD. MO//DE Hence <DEC=90
Since <ABD=<ACD, <BAD=<CED=90, <EDC=<ADB.
No comments:
Post a Comment