Geometry 4.4 and 4.5 Day 3

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March 25 2009

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  • 1. Do Now you will need your book Draw a figure in your notebook.Label it with any side lengths youd like. Then apply a scale factor of3:2. Should you scaled model be bigger or smaller? Draw the scaled model in your notebook.3-25-09

2. Objective

  • Today we will practice more with setting up proportions and solving for missing sides.

3-25-09 3. 3-25-09 15 41 12 54.66 20 x 4. or 5. Page 279 3-25-09 6. Page 280 7. Closing

  • What does it mean if two triangles are similar?
  • How can we be sure that two polygons are similar figures?

3-25-09 8. H/W

  • Page 286 #10 A-I
  • Study for tomorrows quiz on Scale Factors, and using scale factors and proportions to solve for missing sides of polygons.

3-25-09 9. 3-25-09