An exterior angle of a triangle is $110°$  and one of its interior opposite angle is $45°$ , then the other interior opposite angle is

An exterior angle of a triangle $=110°$

One of its interior opposite angle $=45°$

Other interior opposite angle $=?$

Let it be $=x$

In a triangle,

An exterior angle $=$ sum of its opposite interior angles

$110°=45°+x°$

$x=110°-45°$

$x=65°$