Marcia drew a plan for a rectangular piece of material that will use for a blanket. Three of the vertices are (-3.1,-1.5), (-3.1,3.5), and (2.7,3.5). What are the coordinates of the fourth vertex?

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

6 cars because if you have 8 and subtract 2 youll have 6 left over