Question

what is cicle? plz define this

Answer 1

a round plane figure whose boundary(the circumference) consist of points equidistance from a fixed point (the center)

Answer 2

Sorry friend but actually I'm unable to understand ur question but if u mean "circle" then it is a simple closed figure.It is the set of all points in a plane that are at a given distance from a given point, the centre; equivalently it is the curve traced out by a point that moves so that its distance from a given point is constant. 

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@praduman4