What is the area, in square units, of the square with the four vertices at A(0,0), B(-5,-7), C(2,12), and D(7,5)?
Definitely NOT a square !!!
Easiest way to calculate [ABCD :]
Find the area of rectangle EHFB
From this subtract areas of
Right triangles BEC , CFD , AGD and Trapezoid AGHB
