Geometry

Question Analysis:
This is a “complete the parallelogram” style question requiring diagonal midpoint application.
The main focus is calculating a fourth coordinate that balances the diagonals.

Key Concept Explanation:
In parallelograms, opposite vertices form diagonals that intersect at the same midpoint.

Step-by-Step Solution:
– WY: W(4, 2), Y(12, 10) → midpoint = (4 + 12)/2 , (2 + 10)/2 = (8, 6)
– X(10, 6), Z(x, y):
(10 + x)/2 = 8 → x = 6
(6 + y)/...