1. Two students are asked to find the angle measures of AEFG, given that the triangle is isosceles. AEFG has an exterior angle at which has a measure of 110%. Their work is shown below. Which answer is correct? Explain below.

Serin's The measure of Angle G is 70 degrees. Since the base angles are congruent, the measure of Angel F is also 70degrees. This leaves 40 degrees for Angle E.

Lam's The measure of angle G is 70degrees. Since an isosceles triangle has two congruent angles, the measure of Angle E and Angle F must be 55degrees

O Both are correct.

ONeither is correct.