Question

If m∠ABC = 72°, what is m∠DAB? A) 72° B) 108° C) 144° D) 216°

Answer 1

M<DAB + 72 = 180

m<DAB = 108

The answer is B) 108

Answer 2

M∠DAB + m∠ABC = 180°

m∠DAB + 72° = 180°

Subtract 72° on both sides.

m∠DAB = 180° - 72°

m∠DAB = 108°


Your final answer is B. 108°