Answer:
the measure of the two congruent angles is 57°
Explanation:
- the sum of the interior angles in a triangle is 180°
- it's an isosceles triangle with ONE angle of 66°
- the angles at the base are congruent
so
(180 - 66) : 2 =
114 : 2 =
57
----------------------------
57 + 57 + 66 = 180