Question

The coordinates of two vertices of a square are (1, 2) and (1, 0). What are the possible coordinates of the other two vertices?
(3, 0) and (3, 2) only
(–1, 0) and (–1, 2); (0, 1) and (2,1); (3, 0) and (3, 2); (–1, 4) and (3, 4)
(–1, 0) and (–1, 2); (3, 0) and (3, 2) only
(–1, 0) and (–1, 2); (0, 1) and (2,1); (3, 0) and (3, 2) only