C. Poligoane regulate

Trei poligoane regulate - toate cu cu latura egala cu 1 - au un varf comun. Poligoanele au un numar diferit de laturi si oricare doua poligoane vecine au o latura comuna. Nu sunt suprapuneri sau spatii libere. Cate laturi are fiecare poligon ? Câte solutii sunt posibile?

Sursă: problemă originală (Adrian Atanasiu)

C. Regular polygons

Three regular polygons - all with a side equal to 1 - have a common vertex. Polygons have a different number of sides, and any two neighboring polygons have a common side. There are no overlaps or free spaces. How many sides does each polygon have? How many solutions are possible?

Source: original puzzle (Adrian Atanasiu)