For drawing a polygon with a side of given length, first we draw a ______ with centre at one of the ends of the length and the radius as length.

A. Circle

B. Arc

C. Semicircle

D. Quarter circle

I have been asked this question by my school principal while I was bunking the class.

I would like to ask this question from Drawing Regular Polygons & Simple Curves topic in section Geometrical Construction of Engineering Drawing

Right choice is C. Semicircle

To elaborate: For drawing a polygon with a side of given length, first we draw a semicircle with centre at one of the ends of the length and the radius as the length. The next step is to divide the semicircle into the number of sides of the polygon.