:D Düsseldorfs Geometry

We have a triangle where the basic points are Rheinturm (A), Ständehaus (B)
and Tonhalle (C).

Each side of the triangle is divided by a point:

AB has a distance of 638m from A

BC has a distance of 364m from B

CA has a distance of 1249m from C

By connecting the following points A - AB - CA / B - BC - AB / C - CA - BC you
will create 3 triangles within the triangle A - B - C.

If we construct the circumcircle of each of these triangles, these three
circles will meet in one point called X, where you'll find the cache hideout.

To compensate any inaccuracy of mesurement, the geochecker is set with
tolerance. Please use it to receive the exact coordinates!

**GENERAL REMARKS**

There is no geocache to find at the listed coordinates. No
cache which is part of the :D series requires to trespass
rail tracks or highways. Caches located on private property
have been placed there with explicit permit of the owner.
If a riddle requires visiting third party websites or
downloading additional files, we guarantee that at the time
of publish, they don't contain any virus or harmful
software.