Using vector method, show that the points A(1, -1, 0), B(4, -3, 1) and C(2, -4, 5) are the vertices of a right-angled triangle.
A = (1,-1,0)
B = (4,-3,1)
C = (2,-4,5)
Tip – For any 2 perpendicular vectors 
& 
, 
The triangle is right-angled.
1
Using vector method, show that the points A(1, -1, 0), B(4, -3, 1) and C(2, -4, 5) are the vertices of a right-angled triangle.
A = (1,-1,0)
B = (4,-3,1)
C = (2,-4,5)
Tip – For any 2 perpendicular vectors & ,
The triangle is right-angled.