Rectangle ABCDABCDA, B, C, D is graphed in the coordinate plane. The following are the vertices of the rectangle: A(-7, -5), B(-7, 6),A(−7,−5),B(−7,6),A, left parenthesis, minus, 7, comma, minus, 5, right parenthesis, comma, B, left parenthesis, minus, 7, comma, 6, right parenthesis, comma C(-4, 6)C(−4,6)C, left parenthesis, minus, 4, comma, 6, right parenthesis, and D(-4, -5)D(−4,−5)D, left parenthesis, minus, 4, comma, minus, 5, right parenthesis. Given these coordinates, what is the length of side CDCDC, D of this rectangle?
units