Question

x2 + y2 + z2 = xy + yz + zx, then the triangle is:

(A) isosceles

(B) right angled

(C) equilateral

(D) scalene

Answer 1

equilateral x2 + y2 + z2 = xy + yz + zx, then the triangle is:

Answer 2

The answer is equilateral triangle thank you