Get a cup or bottle somethig round orrr... you can stick a hole in the middle with a thumbtack in it with string on the thubtack conected to the pen (or pencil) and go around:)
A compass is mainly used to draw perfect circles, but it can also be used to draw arcs of different sizes.
Geometrical compass To draw a perfect circle, and another compass for determining directions
Most of the time, a tool called a "compass" is used to draw perfect circles. This compass is not to be mistaken with a directional compass.
To achieve perfect circles when cutting wood, use a compass to draw the circle on the wood before cutting. Secure the wood firmly in place and use a jigsaw or a hole saw to carefully cut along the drawn line. Practice and patience are key to achieving precise and perfect circles.
To draw circles you need to use a compass
You draw circles.
Because it's physically impossible (general cases) to rotate our hand in exactly 360 degrees. My botany professor draws circles on board which makes us choke! He draws a circle with exactly 360 degrees- this is a special case, not seen everywhere. I draw perfect circles by using a compass, a stencil, or a piece of string.
draw 2 circles the same size
by making circles
Compass
A compass
!. Draw a box. Then draw circles in it to represent the particles.