Analysis of information sources in references of the Wikipedia article "2-διάνυσμα" in Greek language version.
The algebraic bivector is not specific on shape; geometrically it is an amount of oriented area in a specific plane, that's all.
The terms axial vector and pseudovector are often treated as synonymous, but it is quite useful to be able to distinguish a bivector (...the pseudovector) from its dual (...the axial vector).