Question

Triunghiul ABC are m(A)=35 grade si m(B)=75 grade. Aflati Madura unghiului exterior C

Answer 1

Suma unghiurilor unui triunghi =180
m(35+75+m(C)=180
m(C)=180-75-35
m(C)=70
Deci unghi exterior=180-70=110

Answer 2

ABC triunghi . in triunghi are 180 grade

 deci:m(A)+m(B)+m(C)=180 grade

       35+75+m(C)=180
             110+m(C)=180
          m(C)=180-110
                  m(C)=70de grade