Are these two ladders the same length? a. no, the triangles aren’t congruent, so sides formed by the ladders aren’t equal. b. yes, because the triangles are congruent, by the sas postulate. c. yes, because the triangles are congruent, by the aas postulate. d. it is impossible to tell from the information provided.

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