The base of an equilateral triangle with side 2a lies along the y-axis such that the mid-point of the base is at the origin

Chapter 10 Straight lines Exercise 1.1 Q - 2

The base of an equilateral triangle with side 2a lies along the y-axis such that the mid-point of the base is at the origin.  Find vertices of the triangle.

The base of an equilateral triangle with side 2a lies along the y-axis