posted by diana .
the degree measure of angle A is represented by 2x-20 and the degree measure of angle B by 2x. Find the value of x, measure of angle A and B.
From what you posted, we do not know what is the relation between A and B.
Is the triangle isosceles? is A and B complementary or supplementary, is one the external angle of the other?
You have to find the relation from the diagram or describe it if you cannot post the diagram.