DEMO: Drawing a Pentagon Within a Circle

6-1/2 minute video on drawing a pentagon within a circle.

The above video describes the process of drawing a pentagon inscribed within a circle. The concept is precise, though execution is often not perfect because of several factors. The first is that pencils and compasses need to be sharp and capable of fine lines. The second is that small inaccuracies in alignment and compass adjustments accumulate into larger errors; this is called cumulative error.

The tools used are:

straight edge pencil compass