Agenda 02.11.11

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Agenda 02.11.11

• Warm Up/Reflection
• Questions from HW?
• Ch 8.8 Similarity and Dilations
• Making Faces Project(Due Monday)

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Warm Up

• Graph the following points to create triangle
  ABC.
• A (1, 2) B (4, 1) C (2, 4)
• Now, complete the following transformations
• Reflect across the x-axis
• Translate 8 units left and 6 units down
• Rotate 90º counterclockwise

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Similarity and Dilations

• Chapter 8.8

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Similar Polygons have the same shape, but can
be different sizes Dilation stretches
or shrinks a figure. The image created
is similar to the original
figure Distortion scales the figure in one
dimension, leaving the other dimension the
same
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TASK 1
Create the face
Place a sheet of graph paper over the face parts
worksheet, and trace the desired parts to make a
face
Place letters along the width and numbers along
the length of the graph paper to provide
reference coordinates for each cell of the face.
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TASK 1
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TASK 2
Enlarge the face
To do this, you will double the width and length
of the cells of the face.
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TASK 2
You will need to copy each cells content form
the original into the appropriate cell of the
enlargement. (What is in cell D3 of original will
go in cell D3 of enlargement, it will just be
much larger)
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TASK 2
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TASK 3
Distort the face
To distort the face, you will scale up one
dimension, and leave the other dimension the
same. Please scale the one dimension by 3 or 4.
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TASK 3
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To Recap
Task 1 Draw the face(one box for each
dimension) Task 2 Enlarge the face(two boxes
for each dimension) Task 3 Distort the
face(one box for each on one dimension, three
boxes for each on the other dimension) When you
are done, color in the faces.Note each face
should be on a separate piece of graph paper.