**Command: **conCircle

**Description:**
Constructs a circle and shows the circle parameters. The command refers to
the fundamental circle processor that is used whenever a circle is to be
constructed. The supported construction methods are
*Pick:* An existing circle or circular arc can be picked.

*Center:* The circle is constructed from the
center P1 and
the radius r
or from the center
P1 and a point
P2 on the circumference.

*Circumference:* The circle is constructed from three
points P1,
P2 and P3 on the
circumference.

*Tangent:* The circle is constructed from the
radius r
being tangential to two lines, a
line and a
circle or two
circles.