Answer:
The missing vertex is not (9,5) it is rather (8,5)
Step-by-step explanation:
We cannot see Tenesha's solution steps, so we cannot identify her mistakes.
Moreover we cannot see the options.
However, the mistake we can spot with the available information is that, the fourth vertex of a parallelogram with vertex (1, 5), (5, 2), (12, 2) is not (9,5).
The two adjacent horizontal vertices are:
(5,2) and (12,2).
The distance between them is |12-5|=7.
Since the opposite sides of a parrlallelogram are congruent, the other horizontal vertex for (1,5) is (1+7,5), which is (1,5)
