Because the two sides are congruent, that also means they must have the same exact angles. To find X, equal the equations to each other.
2x- 20= x + 8
Subtract x on both sides
x- 20 = 8
add 20 on both sides
x= 28 Now plug 28 into 2x-20
2(28) - 20
Answer is 36 degrees
