Find the area of the triangle formed by the points A (1, 1, 2), B (2, 3, 5) and C (1, 5, 5) as its vertices (using vector).

Find the area of the triangle fonned by the points A (1,2,4), B(3,1,-2) and C(4,3,1) as its vartices (using vector).

Find the area of a triangle formed by the points A(5, 2), B(4, 7) and C (7, - 4).

Find the area of the triangle with vertices A (1, 1, 2), B (2, 3, 5) and C (1, 5, 5).

The area of the triangle having vertices : A (1, 1, 2), B (2, 3, 5) and C (1, 5, 5) is :

Find the area of the triangle formed by the points P(-1.5, 3), Q(6,-2) and R(-3, 4).

Find the area of the triangle having the points A(1,1,1), B(1,2,3) and C(2,3,1) as vertices.

Find the area of the triangle formed by the points A(1,1,1),B(1,2,3) and C(2,3,1) with reference to a rectangular system of axes.

Find the area of the triangle with vertices A(1,12), B(2,3,5), C(1,5,5)