Answer:
A= 130 
B= 25 
Explanation:
A is 130 because the amount of degrees that are in a triangle is 180 degrees. From that we can substract 25 from 180 and get 155. 
Since B is congruent with 25, B is also 25 degrees. Therefore, A is 130 because 180 - 50 is 130. 
Hope this helps.