Răspuns :
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
m(35+75+m(C)=180
m(C)=180-75-35
m(C)=70
Deci unghi exterior=180-70=110
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
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