Understand and use multiplication by a complex number as a linear transformation in the complex plane.

u2-t1-s2-d4

Interactive

Complex multiplication — rotate and scale

manipulative

Drag two complex numbers and see multiplication as a rotate-and-scale on the Argand plane.

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Want a different take?

Already have one and want another angle on this point? Describe what students should notice. Requests are read and acted on.