The diameter of a circle passes through ____________

Hint: By definition , the diameter of a circle is a straight line from side to side through the center of a body or figure , especially a circle or sphere

Complete step-by-step answer:
A circle is all points in the same plane that lie at an equal distance from a center point.. The distance between the midpoint and the circle border is called the radius. A line segment that has the endpoints on the circle and passes through the midpoint is called the diameter.
We know that the diameter of a circle passes through the center of a circle dividing the circle into two equal halves.
Thus , the required answer is the center of a circle .

Note: In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Students often forget the basics of geometry of circles. So we need to first understand the meaning of a circle and its diameter.