question_answer

In \[\Delta ABC\]\[,\] \[\angle A={{50}^{o}}\]\[,\]\[\angle B={{60}^{o}}\]and\[\angle c={{70}^{o}}\]. Find the measures of the angles of the triangle formed by joining the mid-points of the sides of\[\Delta ABC\].

A) \[{{90}^{o}}\]                        

B)        \[{{120}^{o}}\]               

C)        \[{{180}^{o}}\]                                  

D)        \[{{0}^{o}}\]