The bivector and the equivalence of the parallelograms on the three number planes

Abstract

While we did not define an area on the number planes we defined the equivalence of the parallelograms based on the classic area context of the skew-scalar product. Accordingly parallelograms spanned by numbervector-pair on a number plane are equivalent if their skew-scalar products are equal.

Contents
1. History
2. The equivalence of the parallelograms
3. Summary