Two groups of cyclers, the Hawks and the Eagles, cycled on two different routes from their camp to a cave. The Hawks cycled through Bird Point to reach the cave. The Eagles cycled directly to the cave. The figure shows the distances they cycled. alt= Which simplified expression can be used to find the difference in the number of miles cycled by the two groups?

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