Are the points A ( 3,6,9) ,B( 10 ,20, 30 , ) and C( 25,- 41, 5) 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

Without using the Pythagoras theorem, show that the points (4,4), (3, 5) and (-1, -1) are the vertices of a right angled triangle.

Verify that the points ( 0,7,10 ) , ( -1,6,6) and ( -4,9, 6) are the vertices of an isosceles triangle

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

Show that the points (12, 8), (-2,6), and (6, 0) are vertices of a right-angled triangle.

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

Show that the points A(1,3),B(2,6),C(5,7) and D(4,4) are the vertices of a rhombus .

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

If the points A(6, 1), B(8, 2), C(9, 4) and D(p, 3) are the vertices of a parallelogram, taken inorder, find the value of p.