The deck that Amos is building is in the shape of a parallelogram, DGRY. The measure of 2D is five-halves the measure of ZY. Find the measure of

each angle of the deck.

m2D =

m2 =

mZR=

m_Y =

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