Use properties of parallelograms to solve Problems 1-3. 1. The wall frames on the staircase wall form parallelograms ABCD and EFGH. In O ABCD, the measure of ZA is three times the measure of ZB. What are the measures of ZC and ZD? 2. In EFGH, FH = 5x inches, EG = (2x + 4) inches, and JG = 8 inches. What is the length of JH? 3. The diagram shows a section of the support structure of a roller coaster. In JKLM, JK = (3z - 0.9) feet and LM=(z +2.7) feet. Find JK.