If the position vectors of the vertices A, B and C of a ∆ABC be 
and 
respectively, prove that ∆ABC is equilateral.
Tip – For any vector 
the magnitude 
The three sides of the triangle are equal in magnitude, so the triangle is equilateral.
1
If the position vectors of the vertices A, B and C of a ∆ABC be and respectively, prove that ∆ABC is equilateral.
Tip – For any vector the magnitude
The three sides of the triangle are equal in magnitude, so the triangle is equilateral.