Question

In Figura de mai jos,AB║EF si AE║.Determinati Masurile unghiurilor:m(∡DFE)=....
m(∡ACD)=....
m(∡CEF)=...
m(∡BAC)=.....
m(∡BDC)=....
2.IN TRIUNGHIUL ABC,din figura de mai jos avem DE║BC si EF║AB Determinati masurile unghiurilor:m(∡FEC)=.....
m(∡ABC)....
m(ACB)=....

Answer 1

1.
m(∡DFE ) = 90°
m(∡ACD ) =60°
m(∡CEF ) =30°
m(∡BAC ) = 70°
m(∡BDC ) = 30°
2.
m(∡ABC) = 60°
m(∡ACB) = 60°