Absolute Value of Complex Cross Product is Commutative

Theorem
Let $z_1$ and $z_2$ be complex numbers.

Let $z_1 \times z_2$ denote the (complex) cross product of $z_1$ and $z_2$.

Then:
 * $\size {z_1 \times z_2} = \size {z_2 \times z_1}$

where $\size {\, \cdot \,}$ denotes the absolute value function.

Proof
Hence the result.