Question

Two vertices of a right triangle have coordinates (9, 1) and (6, -1).

Select each ordered pair that could be the coordinates of the third vertex.
(6,9)
(6, 1)
(1, -1)
(9, -1)

Answer 1

(6,1), (9,-1)

Explanation:

In points (6,1) and (9,-1) a right angle can be formed.