Final answer:
The argument identity for a rhombus complex number involves its angle and the ratio of its diagonals.
Step-by-step explanation:
The argument identity for a rhombus complex number involves its angle and the ratio of its diagonals. Let's consider a rhombus with vertices A, B, C, and D.
The argument identity states that the sum of the angles formed by any two intersecting diagonals of a rhombus is equal to the sum of the angles formed by its adjacent sides.
This can be expressed as:
∠ABD + ∠ACD = ∠ADB + ∠ADC