First understand that every circle is 360 degrees no matter it's size.
So if you want to divide it into 10 equal parts, you need to know the number of degrees for each part.
That would be 360/10 or 36.
So, draw a radius anywhere in your circle, measure 36 degrees to get your next radius, creating the first of 10 segments.
Just keep doing this, to construct all your segments.
I hope this helps -
TIP: To make the job go faster, once you have constructed your first segment, get a compas and place the point on one end of the segments arc, and put the pencil on the other end of the arc. Keep this length in the compass and construct your segments with this, moving around the circle.
Why does this work? Because, the same angle at the centre of any circle, will create the same length arc on the same circle!
So if you want to divide it into 10 equal parts, you need to know the number of degrees for each part.
That would be 360/10 or 36.
So, draw a radius anywhere in your circle, measure 36 degrees to get your next radius, creating the first of 10 segments.
Just keep doing this, to construct all your segments.
I hope this helps -
TIP: To make the job go faster, once you have constructed your first segment, get a compas and place the point on one end of the segments arc, and put the pencil on the other end of the arc. Keep this length in the compass and construct your segments with this, moving around the circle.
Why does this work? Because, the same angle at the centre of any circle, will create the same length arc on the same circle!