Respuesta :

Answer:

The coordinates of point E are (3,-2)

Step-by-step explanation:

we know that

The diagonals of a parallelogram bisect each other

That means ----> The coordinates of point E is the midpoint diagonal AC or the midpoint diagonal BD

The formula to calculate the midpoint between two points is equal to

[tex]M=(\frac{x1+x2}{2},\frac{y1+y2}{2})[/tex]

Verify both cases

Find the midpoint AC

we have the points

A(1,1) and C(5,-5)

substitute in the formula

[tex]E=(\frac{1+5}{2},\frac{1-5}{2})[/tex]

[tex]E=(3,-2)[/tex]

Find the midpoint BD

we have the points

B(8,5) and D (-2,-9)

substitute in the formula

[tex]E=(\frac{8-2}{2},\frac{5-9}{2})[/tex]

[tex]E=(3,-2)[/tex]

therefore

The coordinates of point E are (3,-2)