Answer:
7, 3
Step-by-step explanation:
A rectangle has 2 pairs of congruent sides. One edge of the given rectangle goes from (1,6) to (7,6). Therefore, the length of the rectangle is 6 units because 7 - 1 = 6 (x-coordinates).
The other edge of the rectangle goes from (1,3) to (1,6). Therefore, the width of the rectangle is 3 units because 6 - 3 = 3 (y-coordinates).
Because the length is 6 units and the width is 3 units, add 6 units to the x-coordinate of (1,3) and subtract 3 units from the y-coordinate of (7,6).
Thus, the missing vertex is at the point (7,3).
