Docstoc

Similarity and Dilations

Document Sample
Similarity and Dilations Powered By Docstoc
					    Agenda 02.11.11
     Warm Up/Reflection
    Questions from HW?
Ch 8.8 Similarity and Dilations
    Making Faces Project
        (Due Monday)
              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
Similarity and
  Dilations
  Chapter 8.8
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
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.
TASK #1
              TASK #2
              Enlarge the face


To do this, you
will double the
   width and
 length of the
  cells of the
      face.
              TASK #2
You will need to copy each cell’s 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)
TASK #2
            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.
TASK #3
               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.

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:11
posted:3/26/2012
language:English
pages:13