I have uploaded the tilings that are to do with this question. The wording on this question is what is giving me trouble and thus not understanding the question.

a)On the each tiling mark with a small circle one centre of rotational symmetry fromeachtranslational orbit. Indicate the order of each rotational symmetry by a number written alongside the corresponding circle.

Could you somehow maybe explain this a bit better or show what it means on one of the tiles so I can at least do the other one.

b) Determine if each tiling is transitive explaining your answer.

Now I always get mixed up on what makes a tiling transitive. The only thing I can think of is in the first tiling when two of the little shapes are put together then I am able to translate that shape to anywhere on the tiling, whereas the second tiling I can't. Is this complete jiberish or am I going in the right direction

Any help would be greatly appreciated.

Thanx