A parallelogram is transformed according to the rule open paren x comma y close paren rightarrow open paren x comma y close paren Which is another way to state the transformation?

The rule (x, y) → (x, y) leaves every point in the same location, so the parallelogram does not move. A full 360° rotation about the origin also returns every point to its starting location, so the transformation is r₀, 360°.

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