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Glide Reflections and Compositions

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Presentation on theme: "Glide Reflections and Compositions"— Presentation transcript:

1 Glide Reflections and Compositions

2 Compositions When two or more transformations are combined to produce a single transformation The composition of 2 (or more) isometries is an isometry.

3 Glide Reflections Combining, a translation with a reflection
If the line of reflection is parallel to the direction of translation, then it does not matter which you do first. Otherwise, order is important.

4 1. Finding the Image of a Glide Reflection
Use the information below to sketch the image of QRS after a glide reflection. Q(2, –3), R(4, –4), and S(5, –1) Q’’(-2, 2), R’’(-4, 1), & S’’(-5, 4)

5 2. Finding the Image of a Composition
Perform the following composition on C(2, 0), D(3, 3) C’(2, 0), D’(3, –3) C’’(0, –2), D’’(–3, –3)

6 3. Finding the Image of a Composition
Perform the Glide Reflection on A(–3, 5). A’(–6, 2) A’’(2, –6)

7 4. Describing the composition
Rotation of 180° around the origin Reflection across y = 1

8 Combinations of Transformations Practice WS and Bridget Blockhead WS
Class Work Combinations of Transformations Practice WS and Bridget Blockhead WS


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