Question

In figura de mai jos A, B apartine a, M, N apartine b,A,C,M,P apartine d, triunghiul ABC= triunghiul MNP.Demonstrati ca a //b.

Answer 1

Din tr ABC= tr MNP => AB=MN, AC=MP, BC=NP => d(B,AC)=d(N,MP) => BN//AP => BN//AM => ABNM-par => AB//MN => a//b