Geometry

Question Analysis:
This problem tests your ability to apply midpoint logic to determine a missing point in a quadrilateral meant to be a parallelogram.

Key Concept Explanation:
In parallelograms, diagonals bisect each other.
Midpoints of diagonals must match.

Step-by-Step Solution:
RT: R = (0, 1), T = (9, 10)
Midpoint = (9/2, 11/2) = (4.5, 5.5)
S = (6, 4), U = (x, y)
→ (6 + x)/2 = 4.5 → x = 3
→ (4 + y)/2 = 5.5 → y = 7
So U = (3, 7)

Common Mistak...