One Point On The Line

Steps

1. We draw line g, perpendicular to line f passing through point A.
2. We draw a line segment AB, at the center of which we draw point C.
3. We also construct a perpendicular line to the line segment AB, passing through point C.
4. At the intersection of lines i and g, point D, which is the center of circle k, is located. We draw circle k with the radius of DA.