Constructing a centre of a circle

Thema:
Kreis
Here you will discover, how to construct a centre of any circle!
Taks: -create two points on the circle -create a segment between these two points -create the midpoint of the segment (hint: drop down box "new point") -create a perpendicular line to the segment in the midpoint repeat the steps above for any two new points intersect the two perpendicular lines