Richard I and Orange Math on Jeanette, or Jeannette, as the case may be

Richard I says:

My eyes were attracted to the fact that her name is spelt in two different ways. Maybe all this innnvennnntinnnng is goinnnnng to her head?

Of course maybe the n-gon to her head instead?

And here's Orange Math:

I guess I'll cite Jeanette whenever I use that formula. The rule really helps. I tried using a protractor.

Steve H has some questions, too.