Warm up

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Warm up

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

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Review Homework
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Skills Check

• You can do this!

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Glide Reflections and Compositions
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Compositions

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

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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.

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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)
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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)
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3. Finding the Image of a Composition

• Perform the Glide Reflection on A(3, 5).

A(6, 2)
A(2, 6)
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4. Describing the composition

1. Rotation of 180 around the origin
2. Reflection across y 1

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Class Work

• Combinations of Transformations Practice WS
• and
• Bridget Blockhead WS

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Home Work

• Symmetry of Language WS