7. Verify that parallelogram ABCD with vertices A(–5, –1), B(–9, 6), C(–1, 5), and D(3, –2) is a rhombus by

Question

showing that it is a parallelogram with perpendicular diagonals. (3 points)

Answer 1

well, find the slopes of AC and BD.

If their product is -1, they are perpendicular.