Does it boil down to a misprint somewhere?

Tea parties and

Royal taxes aside, we

Americans will name our own

Plane shapes with two opposite sides

Evenly spaced.

Zounds! Mr. Hutton, you scholar

Of Math, “sometimes”

Is shaky; we may be us, but we are not

Daft.

Thank you, Claudia O. 

http://mathworld.wolfram.com/Trapezium.html

https://books.google.com/books?id=Nn9RAAAAYAAJ&printsec=frontcover#v=onepage&q=trapezium&f=false   

See pages 610 and 611!