Show that the points A(-1, 1), B(2, -2) and C(8, 4) are the vertices of a right angled triangle.

Prove that the points A(7,10), B(-2,5) and C(3,-4) are the vertices of an isosceles right angled triangle.

Show that the points (1, -2), (-2, -1) and (7, -4) are collinear.

Without using pythogoras theorem,show that A(4,4),B(3,5) and C(-1,1) are the vertices of a right angled triangle.

Show that the points A(-1, 1), B(3, 5) and C(-2, 6) form an isosceles triangle.

If A(-1,0),B(5,-2) and C(8,2) are the vertices of a triangleABC then find its centroid.

Prove that the points (-2, –1), (1, 0), (4, 3), (1,2) are not the vertices of a rectangle.

Prove that the triangle whose vertices are (-2, 2) (1, -2) and (9, 4) is a right angled triangle.

Prove that the following points are the vertices of an isosceles right angled triangle. (0, 4), (4, 1), (7, 5)

Prove that the following points are the vertices of an isosceles right angled triangle. (3, 0), (6, 4), (-1, 3)

Prove that the following points are the vertices of an isosceles right angled triangle. (3, 1), (9, 7), (-3, 7)