llis's backyard has a 6.256.256, point, 25 by 6.25\,\text{m}6.25m6, point, 25, start text, m, end text patio. She would like to build a 1.5\,\text{m}1.5m1, point, 5, start text, m, end text wide extension around 333 sides of the patio, as the figure shows. She will buy 0.250.250, point, 25 by 0.25\,\text{m}0.25m0, point, 25, start text, m, end text tiles that come 252525 to a package.

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