Define circle.

a)a round line

b)a set of points that is round

c)a set of points centered around a point

d)a set of points equidistant from a point

Option D is correct

Step-by-step explanation:

According to Geometry, A circle is a round plane figure whose boundary (that is the circumference) consists of points equidistant from a fixed point (that is the centre).

Thus, according to the definition of circle in geometry, option D is correct because it gives the correct description about circle while all other options are not correct because they are giving the incorrect description of circle.

a negative exponent is translated as follows:

so, we have

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step-by-step explanation: