Answer:
(x, y) = (-1.8, -1.4)
Step-by-step explanation:
Base = x
height = x-4
Area = .5 * height * base
48 = .5 * (x-4) * x
96 = x^2 -4x
x^2 -4x -96=0
x = 12
base = 12
height = 8
They are similar since all three inside angles for each triangle would be the same.