Question

and exterior angle of a triangle is 100 and its interior opposite angles are equal to each other find the measure of angles of the triangle

Answer 1

let the interior opp angles be x
then,
x+x= 100
2x= 100
x= 50
Now,
two angles of the triangle are 50
therefore, third angle =
180-(50+50)
= 80
to sum up angles of the triangle are
50,50,80

Answer 2

x+x=100 (ext. angle theorem of triangle) 2x=100
x=100/2
x=50
required angles are 50, 50 and 80