1.

Which of the following points are the vertices of an equilateral triangle ?

Answer»

`(a,a),(-a,-a),(2a,a)`
`(a,a),(-a,-a),(-a sqrt(3),a sqrt(3))`
`(sqrt(2)a,-a),(a,sqrt(2)a),(a-a)`
`(0,0),(a,-a),(a,sqrt(2)a)`

Answer :B


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