If the origin is the centroid of the triangle PQR with vertices P(2a,2,6), Q(-4,3b,-10) and R(8,14,2c), then find the value of a,b and c.

If the origin is the centroid of the triangle PQR with vertices P (2a, 2, 6), Q (- 4, 3b,-10) and R(8, 14, 2c), then find the values of a, b and c.

If the origin is the centroid of triangle ABC, with vertices A(a,1,3), B(-2,b,-5) and C(4,7,c). Find the values of a,b and c.

If G is the centroid and l the in-centre of the triangle, with vertices A(- 36, 7), B(20, 7) and C (0, -8) , then, find the value of Gl

Find the area of the triangle ABC whose vertices are : A(1,2,4), B(-2,1,2) and C(2,4,-3)

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

Find the area of the triangle whose vertices are : A(1,2,3), B(2,-1,4) and C(4,5,-1)

Find the angles of the triangle whose vertices are (0,-1,-2), B(3,1,4) and C(5,7,1).

Determine the angle B of the triangle with vertices A (- 2, 1), B (2, 3) and C (- 2, - 4).