Answer:
x=62
Step-by-step explanation:
You know that the triangle is isosceles because two of the sides are the same length. According to the Base Angles Theorem, if a triangle is isosceles, then the corresponding angles of the two congruent sides are also congruent. This means that angle x is equal to the third unlabeled angle. And since the angles in a triangle add up to 180, you can write the equation:
56+x+x=180
56+2x=180
2x=124
x=62
