Answer:
Square
Step-by-step explanation:
It’s a square. The distance between each of the corners is √8. Since all four sides are the same and the corners meet at 90°, it’s a square.
15, 17, 19
x 1 2 3 4 5
y 6 0 -4 0 18
9514 1404 393
Opposite sides of a parallelogram are congruent.
m + 1 = 6
m = 5
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n = 12
