52. From point A outside a circle and in the same plane as the circle, 2 rays are drawn tangent to the circle with the points of tangency labeled B and C, respectively. Segment BC is then drawn to form △ABC. If ∠A measures 70°, what is the measure of ∠ABC ?

Answer and Explanation

Your Answer is

Correct Answer is G

Explanation

According to the tangent theorem, we know that AB=AC. So the triangle ABC is an isosceles triangle, ∠ABC= 180-70/2=55