8 How to Distinguish Transformations How to Distinguish Transformations ( look for what s left unchanged ) ● Translation – one point at infinity is fixed ● Rotation – one point (the center) in the interior fixed ● Reflection – a line of fixed points (lines perpendicular to the reflecting line are invariant) ● Glide Reflection – a line is invariant, no finite points fixed Note: The last two reverse orientation.
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