A point is not a circle. A point has no dimensions, it is a single, exact location in space. A circle is defined as the set of all points equidistant from some central point.
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The point from which the circle is drawn IS the center.
It is the center of the circle
A circle has a round shape in which every point on the circle is the same distance from one point called "the center". The center of a circle is not on the circle.
That point is known as the "center of the circle". Every circle has one.
A tangent of a circle is a straight line that touches the circle at only one point.