Given that C is the midpoint of AB, if A(-2, 4) and C(3, -6), what are the coordinates of B?

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

If wxyz is a square, which statements must be true?