An isosceles triangle has base angles that each measure 25°. Which equation can be used to find x, the measure of the third angle of this isosceles triangle in degrees?

Responses
A 50 + x = 18050 + x = 180
B 50 + 2x = 18050 + 2 x = 180
C 25 + 2x = 18025 + 2 x = 180
D 25 + x = 180