Answer:
x = 48 degrees
Step-by-step explanation:
This triangle is an isosceles which means that two of the angles are the same and all triangles add up to 180 degrees so we take the two angles we know and add them
66 + 66 = 132
Then we subtract that number from 180 to find the third angle
180 - 132 = 48
x = 48°
Since the legs of the triangle are congruent then the base angles are congruent, both 66° , then
x = 180° - (66 + 66)° = 180° - 132° = 48°
