Sierra is trying to find out how tall the flagpole is outside of the courthouse in her hometown. She is standing 20 feet from the base of the flagpole and the angle from her eyes to the top of the flagpole is 80°. Her eyes are 4.5 feet from the ground. What is the height of the flagpole? Round to the nearest tenth and show your work.

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality