Given:
and
assume in triangle ABC,
equations (1), (2) and (3) represent the sides AB, BC and CA, respectively.
By solving equations (1) and (2), we have
Thus,
AB and BC intersect at B(√3,4)
Now, solving equations (1) and (3), we have
Thus, AB and CA intersect at A (1/2√3, 3/2)
Similarly, solving equations (2) and (3), we get
Thus, BC and AC intersect at C (-2/√3,4)
Now, we have:
Hence proved,
the given lines form an equilateral triangle.