V. Volenec and Z. Kolar-Begovic
Affine regular pentagons in GS--quasigroups

The "geometric" concept of affine regular pentagon and affine regular star--shaped pentagon in general GS--quasigroup will be introduced. Some characteristics of the introduced concepts will be proved and the geometric interpretation in the GS--quasigroup C(1/2 (1+\sqrt 5)) will be given.