Area of Parallelogram in Terms of Its Diagonals
Area of Parallelogram in Terms of Its Diagonals
The area of a parallelogram (shown in blue) with sides and is . This Demonstration shows that double the area is , where and are the diagonals. So the area of a parallelogram can be expressed in terms of its diagonals and as well as its sides.
A
a
b
×
a
b
2A=×
e
f
e
f
e
f