Question

in a triangle one of the exterior angle is 105 degree one of the interior opposite angle is 75 degree . find the measure of all the angles of the triangle.​

Answer 1

one of the exterior angle is 105°

it means interior angle is 180-105=75

and

another angle is given 75° itself

then ta third angle is

180-(75+75)= 30°

Answer 2

Answer:

Step-by-step explanation:exterior angle=sum of 2opposite interior angles

So,105=75+x

X=105-75

X=30

By angle sum property,sum three angles of a triangle is 180

75, 30 and third angle is y

75+30+y=180

105+y=180

Y=180-105

Y=75