O.M.Rioplatense 2015

Virgil Nicula
Mesaje: 244
Membru din: Sâm Oct 30, 2010 3:55 pm
Localitate: Bradenton, Florida

O.M.Rioplatense 2015

Mesaj de Virgil Nicula »

PP. Let a convex ABCD with X in AC^BD and Y in AB^CD so that AB=BC=CD

and XA=XD. Prove that XB=XC or m(<AXB)=60 (degrees) and XBYC is cyclically.
Scrie răspuns