Home · Unit 2 · Topic 5 · Transformations in the plane

Transformations in the plane

Determine geometric results by matrix multiplications, e.g. showing that the combined effect of two reflections in lines through the origin is a rotation.

u2-t5-s1-d7

Interactive

A matrix transforms the whole shape

manipulative

Scrub a rotation or reflection matrix and watch every vertex of a polygon move together; then stack two origin reflections and see a rotation by twice the angle between the lines.

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