Answer:
[tex]\triangle AB=4.5[/tex]
Step-by-step explanation:
From the question we are told that:
Quadrilateral ABCD Dimensions:
A(1, 4), B(-1,-5), C(3,-2) D(7,2).
Generally the equation for Slope is mathematically given by
[tex]\triangle AB=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]\triangle AB=\frac{-5-4}{-1-1}[/tex]
[tex]\triangle AB=4.5[/tex]
Therefore the slope of length AB is
[tex]\triangle AB=4.5[/tex]