In the figure shown, what is m_A? Explain. A
57°
B
с
57; AABC is an equilateral triangle.
O 66; AABC is an isosceles triangle with base angles B and C. m B = m2C = 57, and
mZA +mZB + m2C = 180.
O 57; AABC is an isosceles triangle with base angles A and C. mZA = mZC.
O There is not enough information to find m A.