$\"\"$

The vertices of the triangle are $\"\"$ and $\"\"$ .

Consider the vectors u, v and w are the sides of the triangle.

The component form of a vectors u, v and w are

$\"\"$ .

$\"\"$

The magnitude of the vectors are

$\"\"$

Find the triangle is an acute , obtuse or right triangle by observing the angle between two vectors.

If $\"\"$ , then the triangle is right triangle.