Using the Box Method to Calculate the Area of a Parallelogram
Try it
y
10
B(79)
-6
Create a rectangle around the parallelogram.
dimensions of this rectangle are
Find the area of the four right triangles surrounding the
parallelogram. The total area of the triangles is
square units.
Subtract the triangle areas from the area of the
rectangle to obtain the area of the parallelogram. The
area of parallelogram ABCD is M square units.
2
-10
2
10
-6 2
A(-3,-1)
-2
C(8, -1)
D(-2, -11)