Question

Fie triunghiul ABC, [BD bisectoarea unghiului B, D apartine (AC), m (B)=80 grade, m (C)=50 grade. Se construiesc DE paralel AB, E aparține (BC), EF paralel AC, F apartine (AB) si EG paralel BD, G apartine (AC).
a) m (DEC)=?
b) m (GEC)=?
c) m (BEF)=?

Answer 1

a)m(<DEC)=80°

b)m(<GEC)=40°

c)m(<BEF)=50°