Find the incentre of the triangle whose vertices are (7,-36), (7,20) and (-8,0).

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 whose vertices are (-2, -3), (3, 2) and (-1,-8)

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

The incentre of the triangle whose vertices are (-36, 7), (20, 7) and (0, -8) is

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

Find the area of the triangle whose vertices are (3, 8), (– 4, 2) and (5, 1).

Find the area of the triangle whose vertices are (2,7),(1,1),(10,8).

Find the area of the triangle whose vertices are (0,0),(a,0) and (0,b)

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