# Warm up - PowerPoint PPT Presentation

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## Warm up

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### 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 ... – PowerPoint PPT presentation

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Title: Warm up

1
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.

2
Review Homework
3
Skills Check
• You can do this!

4
Glide Reflections and Compositions
5
Compositions
• When two or more transformations are combined to
produce a single transformation
• The composition of 2 (or more) isometries is an
isometry.

6
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.

7
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)
8
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)
9
3. Finding the Image of a Composition
• Perform the Glide Reflection on A(3, 5).

A(6, 2)
A(2, 6)
10
4. Describing the composition
1. Rotation of 180 around the origin
2. Reflection across y 1

11
Class Work
• Combinations of Transformations Practice WS
• and
• Bridget Blockhead WS

12
Home Work
• Symmetry of Language WS