The area of parallelogram; triangle and quadrilateral in terms of cross product.

Obtain an expression for the area of a triangle in terms of the cross product of two vectors representing the two sides of the triangle

We know that parallelogram is also a quadrilateral. Let us also split such a quadrilateral into two triangles, find their areas ad hence that of the parallelogram . Does this agree with the formula that you know already?

We know that parallelogram is also a quadrilateral. Let us also split such a quadrilateral into two triangles. Find their areas and hence that of the parallelogram. Does this agree with the formula that you know already?

The area of parallelogram is .......if Delta ABC = 5 sq.units.

Area OF Triangle || Quadrilateral || Centres OF Triangle

We know that parallelogram is also a quadrilateral. Let us split such quadrilateral into two triangles. Find their areas and subsequently that of the parallelogram. Does this process in turn with the formula that you already know?

We know that parallelogram is also a quadrilateral. Let us split such a quadrilateral into two triangles. Find their areas and subsequently that of the parallelogram. Does this process in tune with the formula that you already know?

E, F, G and H are the mid-points of the sides of a parallelogram ABCD. Show that area of quadrilateral EFGH is half of the area of parallelogram ABCD.

Finding the area of figure which is combinations of triangles and quadrilaterals