Two figures are said to be congruent when they have the same shape and size or if one object is a mirror image of the other object. The sides AB and BC are congruent when they have equal lengths of the sides. An isosceles triangle two sides are equal in length.
Since BAC is congruent with another angle, you must add 22 to itself. That makes 44. You then do 180-44 (since all triangles add up to 180) which equals 136
