How many different one-to-one correspondences could be listed between the vertices of two regular triangles & the vertices of two regular n-gnons?

Question

anonymous · Answer

this is two separate questins i imagine, yes?

anonymous · Answer

Yes

anonymous · Answer

so for triangle it would be 6 by 
$$3\times 2\times 1$$ 
three choices for on vertex, then 2 for the second and finally one for the third

anonymous · Answer

I'm sorry but how many for the two regular traingles and how many for the vertices of the two regular n-gnons?