Trapesium is a super common shape. four straight sides, two parallel sides. Never heard of a trapezoid before. :) (British English speaker) "Trapezoid" seems to be some weird word for a general quadrilateral.

Hi Michael, yes, you are right about the stress patterns in those words. but about the meaning, I should say that it is a bit confusing. in American English, a trapezoid is a trapezium in British English and vise versa (a trapezium in American English is a trapezoid in British English) 😂😂😉😉 this is how the OALD9 tries to clarify the confusion. this is the entry for trapezium: 1(British English) (North American English trapezoid) a flat shape with four straight sides, one pair of opposite sides being parallel and the other pair not parallel 2(North American English) (British English trapezoid) a flat shape with four straight sides, none of which are parallel

Trapezoid is a common shape. I had to look up what a trapezium was. I doubt many people would know what that is. Trap·e·zoid. -- trapəˌzoid Tra·pe·zi·um. -- trəˈpēzēəm I hope this helps!🍻