a,b and c are the vertices of a triangle. a has coordinates (4,6). b has coordinates (2,-2). c has coordinates (-2,-4). d is the midpoint of ab. e is the midpoint of ac. prove that de is parallel to bc

A,B and C are the vertices of a triangle. A has coordinates (4,6). B has coordinates (2,-2). C has coordinates (-2,-4). D is the midpoint of B. E is the midpoint of AC. prove that de is parallel to BC.