if the points A(-1,2) , B(2,3) , C(-3,2) and D(-4,-3) are the vertices of parallelogram ABCD, then taking AB as the base , find the height of this parallelogram .

Answer 1

I just plotted your points, and following the usual notation of joining
A--->B--->C--->D--->A
I get a convex quadrilateral and I see no parallel lines

check your typing of the coordinates