Answer:
x = 36
Step-by-step explanation:
Here, we want to get the value of x
As we can see on the markings, the base angle are equal
Thus, the other base angle is x too
mathematically, the sum of all the interior angles of a triangle = 180
thus;
3x + x + x = 180
5x = 180
x = 180/5
x = 36
