If the vertices of a triangle are `A(1,4,2), B(-2,1,2),C(2,3,-4)` then find `/_A,/_B,/_C`.

The vertices of a triangle are A(1, 3, 2), B(2, -1, 3) and C(-1, 4, 2). Find the angle A.

If the vertices of a triangle ABC are A (-4, -1), B (1,2) and C (4, -3), then the coordinates of the circumcentre of the triangle are,

The vertices of a triangle are A(1,4),B(2,3) and C(1,6) ,Find equations of the sides

The vertices of a triangle are A(1,4),B(2,3) and C(1,6) ,Find equations of the medians