Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW If a function is odd and one point on it is R(-3, 4). Name another point. If a function is odd and one point on it is S(9, -10). Name another point.

Review Homework

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Glide Reflections and Compositions

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

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.

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)

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)

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

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

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

Symmetry of Language WS Home Work Symmetry of Language WS