The points G(-7, -9), H(-4,-3), I(-6,5), and J(-9, -1) form quadrilateral GHIJ.
Plot the points then click the "Graph Quadrilateral" button.
Click on the graph to plot a point. Click a point to delete it.
-10
J
I
-8-7 -6 -5 43
G
H
-1
9
2
-
-5
-10
1
2
3
4
5
6 7 8 9 10
