Youre quite right, rookie mistake by me. You would think a Polyphylogenonomist would know better.

However, wouldnt it be more accurate to say that the actual number of sides in any given copulation configuration containing n polygonimals would be n*(sides per polygonimal)-(n-1)? Assuming we exclude tricopulations of hexbears where any given individual may be contacting two other individuals' sides at the same time in a tessalation layout? I must admit im not certain though, my field is polyphylogenomics, not polyphylogenomatics. Im sure there are some edge cases Ive missed, pardon the pun.