Question

Please Help
Determine whether parallelogram JKLM with vertices J(-7, -2), K(0, 4), L(9, 2) and M(2, -4) is a rhombus, square, rectangle or all three.

Answer 1

if the parallelogram is a square of a rectangle then the angles between adjacent sides will be 90 degrees.
Find the slope of the lines KL and LM will tell you if the angle between them is 90 degrees

Answer 2

for the angle to be 90 degrees m1*m2 will = -1 ( m1 and m2 are the slopes of the lines)

Answer 3

r u there?

Answer 4

I figured out. Thank you though! @welshfella