Show that the triangle formed by the points A(1, 3), B(3,-1) and C(-5,-5) is a right angled triangle (by using slopes).

Show that the points (1,3),(3,-1),(-5,-5) form a right angled triangle.

Show that the points (1,3),(3,-1),(-5,-5) form a right angled triangle.

Show that the points (4,4), (3,5), (-1,-1) form a right angled triangle.

Show that the points (4,4), (3,5), (-1,-1) form a right angled triangle.

Show that the triangle ABC with vertices A(0, 4, 1), B(2, 3, -1) and C(4, 5, 0) is right angled.

Prove that the triangle formed by joining the points ( 1 , - 3, 1) , (0 , 1 , 2) , ( 2 , - 1, 3) is a right angled triangle.

Find the area of the triangle formed by the points A (1, 1, 2), B (2, 3, 5) and C (1, 5, 5) as its vertices (using vector).

Show that the points (4,-3,1)(2,-4,5) and (1,-1,0) form a right angled triangle.

Show that the points (4, - 3, 1), (2, -4, 5) and (1, -1, 0) form a right angled triangle .

Show that the points (1, 2, -2), (2, 3, -4) and (3, 4, -3) form a right angled triangle.