Which proportion can be used to find the value of DGβ―β―β―β―β―β―?
157=5DG
5DG=156
DG15=57
57=15DG
Two triangles A B C and D F G. A B is 5 inches. B C is 6 inches. A C is 7 inches. D F is 15 inches. F G is 18 inches. Angle B is congruent to angle F.