Find the circumcentre of the triangle formed by the points A(a,0),B(0,b) and O(0,0): `abne0`.

The area of the triangle formed by the points P(0,1),Q(0,5) and R(3,4) is

Find the circumcentre of the triangle whose vertices are (2, 2), (4, 2) and (0, 4).

Find the incentre of the triangle with vertices A(1,sqrt3), B(0,0) and C(2,0) .

Find the area of the triangle formed by the lines y-x = 0, x + y = 0 and x-k = 0.

Find the area of the triangle formed by the lines y-x=0, x+y=0 and x-k=0.

The orthocenter of the triangle formed by (0,0),(5,−1) and (−2,3) is

Find the circumcentre of the triangle whose vertices are (-2, -3), (-1, 0) and (7, -6). Also find the radius of the circumircle.

Find the area of the triangle ABC where A,B,C are the points (a,0,0), (0,b,0),(0,0,c )respectively, where abc != 0 .

Find the co-ordinates of the circumcentre of the triangle whose vertices are : (-2, 2) , (2, - 1) and (4, 0).

Find the equation of the plane containing the points (1,0,0),(0,2,0) and (0,0,3).