The common step to draw any polygon whether it is a hexagon, a square, and a equilateral triangle in a circle is constructing an arc using an end points of the diameter and the center of the circle
If a polygon is drawn in an circle so that every corner of the polygon lies on the circle, the polygon is called an inscribed polygon or cyclic polygon, and the circle is called circumcircle.
If we draw a hexagon, square and equilateral triangle in a circle.
Then all the corners of the polygon lies on the circle and are called cyclic polygon.
The common step to draw any polygon whether it is a hexagon, a square, and a equilateral triangle in a circle is constructing an arc using an end points of the diameter and the center of the circle.
Thus, option D is correct.
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