This puzzle is based on the characteristics of regular Pentagon. When you find the solutions, please keep eyes on the figure of solutions. Maybe you can just see the regular pentagons on it.

If you can see the 3 or 4 regular pentagons in one solution, you should have understood the structure of “3 Pentagons”.

I show one solution.

And, the next page's figure is to show the 3 solutions and the structure of “3 Pentagons”.
Crick here or email to me, but ....really OK? (^^)

--Koshi ARAI, (Aug.28 / 2014)