Find the measure of angle x.52°64°128°38°

For this case we have an isosceles triangle, that is, it has two equal sides and a different one. If we look at the figure, the equal sides are the segment xy and the segment yz, also the angle x is equal to the angle z.

On the other hand, we know that the internal sum of the angles of a triangle is 180 degrees.

So:

Knowing that and

Thus, the angle x is 64 degrees.

64 degrees

Option B