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**Intersection with the Circle only **

One can construct everything with the circle only. To see,
how the intersection of two lines can be constructed, show the hidden objects
with a right mouse click. You see a lot of circles that make the construction.
It uses reflection at a circle.

Note that the reflection at a circle from inside to
outside cannot be done with a finite given construction in all cases, but must
be modified for each case, depending on the distance of the reflected point.
This is clearly unavoidable, since a circle is a limited element, which cannot
create points in an arbitrary distance using the same number of steps in each
case.

### Technical Information

Of course, this construction uses some macros to do the job.