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9-2Translations and Glide Reflections

9-2Translations and Glide Reflections - made up of...

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Translations Section 9-2
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A translation , or glide, is an isometry that glides all points the same distance in the same direction.
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If a transformation T maps any point (x, y) to (x + a, y +b), then T is a translation. (-7, -4) (3, -2) Each point glides 10 units right and 2 units up.
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Another way to find a translation is to perform a reflection in the first of two parallel lines and then reflect the image in the other parallel line. A transformation
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Unformatted text preview: made up of successive transformations is called a composition. • A glide reflection combines two isometries to produce a new transformation. This new transfomation is itself an isometry. P P’ P” Joke Time • Why did the chicken go to the middle of the road? • To lay it on the line. • Why did the chicken cross the basketball court to talk with the ref? • Because he was calling all fowls!...
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