Is this a right-angled trapezium?

[moobu2]

Or some other sort of quadrangle

[fenriswolf]

1. fuck you its a unparralleled polygon with 4 different lenghed sides

don't try to pass off that BS.

[baldguy]

2. Isn't that where Nazi trapese artists train?

[Crabby Appleton]

3. No, doesn't have two parallel sides. nt

[Staph]

4. Per Wikipedia

(yeah, I know, usual grain of salt applies)

"A trapezoid (in North America) or trapezium (in Britain and elsewhere) is a quadrilateral, which is defined as a shape with four sides, that has one set of parallel sides. Some authors define it as a quadrilateral having exactly one set of parallel sides, so as to exclude parallelograms, which otherwise would be regarded as a special type of trapezoid.

"The exactly opposite kind of quadrilateral, that is, one which does not have any parallel sides, is called a trapezium in North America and a trapezoid in Britain and elsewhere."

So, the correct answer depends on where your quadrilateral resides.

[moobu2]

5. HA! I knew it.

And with the addition of the right-angle, it could be considered a right-angled trapezium (as long as I didn’t take it to Britain).