I don't understand this question and I need help understanding how to solve it.

Verify that parallelogram ABCD with vertices A(-5,-1), B(-9,6), C(-1,5), and D(3,-2) is a rhombus by showing that it is a parallelogram with perpendicular diagonals.

Question

I don't understand this question and I need help understanding how to solve it.

Verify that parallelogram ABCD with vertices A(-5,-1), B(-9,6), C(-1,5), and D(3,-2) is a rhombus by showing that it is a parallelogram with perpendicular diagonals.

anonymous · Answer

draw it and find the slope of the lines and show that the ones that are side by side have equal slopes meaning they are parallel

anonymous · Answer

connect the diagonals and find their slopes they should be the negative recipricals

anonymous · Answer

How can I find the slope of the lines after i've drawn the shape? I'm a little behind

anonymous · Answer

y2-y2 over x2-x1

anonymous · Answer

its a formula for slope
take the coordinates you have and plug it into the equation