5
A right triangle and some of its measurements are shown in this diagram.
600
12 mm
t-
Based on the measurements shown in the diagram, what is t?
ou
A. 6 mm
B. 413 mm
C. 613 mm
D. 8 mm

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