Which transformations had to occur for the blue triangle to become the purple triangle? [Note: All rotations are about origin]
A) rotated 180° then translated down 3 units and left 2 units
B) reflected over x-axis and then rotated 90° clockwise
C) translated down two units and rotated 90° counter-clockwise
D) rotated 90° clockwise then translated down 3 units and left 2 units

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