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If the pattern continued, it will form a complete loop. I tested all my possibilities by using the Tesseltation Interactivity. It takes 10 pentagons to form a ring without overlapping. By using decagons, it took 10 to form a ring and it did not overlap. I think that they fit together neatly because it depends on where you place the polygons. You can also use squares to make a ring. I used 12 squares but you can make it as big as you want. I don’t think you can make a ring with triangles without making them different sizes but I am not really sure. Furthermore, you can make a ring by using 6 hexagons but you can use more if you wish to. I only thought of a little bit of possibilities but there are a lot more than I thought of!