Q. (a, b), (c, d), (e, f) are the vertices of an equilateral triangle. Then the orthocentre of the triangle is

1942 201 Straight Lines Report Error

A

$(\frac{a + d + f}{3}, \frac{b + c + e}{3})$

3%

B

$(\frac{a + c + e}{3}, \frac{b + d + f}{3})$

92%

C

$(\frac{a + c + f}{3}, \frac{b + d + e}{3})$

2%

D

$(\frac{a + b + c}{3}, \frac{d + e + f}{3})$

4%

Solution:

In equilateral triangle S = G