Question

A (2,1)

B (1,3)
C (5,5)

Suppose a rectangle ABCD has the coordinates shown.

Find the coordinates of point D.

Answer 1

I think your answer would be (6,3)

Answer 2

Answer: (6,3)

Explanation:

The midpoint of AC and BD are the same because a rectangle's diagonals cut each other in half.

D = A + C - B

D = 2 + 5 - 1 = 6

D = 1 + 5 - 3 = 3

D = (6, 3)