The points `A(1,1),B(3,2)` and `C(5,3)` cannot be the vertices of the triangle ABD . Justify.

Points A(3,1), B(12, -2) and C(0,2) cannot be the vertices of a triangles.

The points A(3,1) , B (12,-2) and C(0,2) cannot be vertices of a triangle.

The points A(3,1) , B (12,-2) and C(0,2) cannot be vertices of a triangle.

show that the points A(1,-1,-5), B(3,1,3) and C(9,1,-3) are the vertices of an equilateral triangle.

If the points A(1,1), B(-1,-1) and C(-sqrt(3),sqrt(3)) are the vertices of a triangle is

Prove that the points A(1,-3),B(-3,0)and C(4,1) are the vertices of a right isosceles triangle .

Prove that the points A (1,2,3), B(2,3,1) and C(3,1,2) are the vertices of an equilateral triangle.

Without using pythagoras theorem, show that the points A(-1,3) ,B(0,5) and C(3,1) are the vertices of a right angled triangle

Without using pythagoras theorem, show that the points A(-1,3) ,B(0,5) and C(3,1) are the vertices of a right angled triangle