Put the compass spike at the bottom of the circle and draw an arc that touches the top of the circle and extends more than half way down each side... Image caption, ...then keeping the compass ...

STEP 1: Using a pencil and ruler, draw a horizontal line. Set the compass to the width of the line. Place the compass at either end of the line and draw two arcs that cross in the middle.

Most Americans probably last held a drawing compass in elementary school. It also usually has two legs, one with a sharp point for holding the instrument in place and one with a pen or pencil point ...