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SIMILAR POLYGONS
• How can I identify a similar figure?
• How can I solve problems using the scale factor?
SIMILAR POLYGONS
• Similar Polygons – Two polygons are similar if and only if
  their corresponding angles are congruent and the
  measures of their corresponding sides are proportional.
EXAMPLES
EXAMPLES
SCALE FACTOR
An architect prepared a 12-inch model of a
skyscraper to look like a real 1100-foot building.
What is the scale factor of the model compared to
the real building?
Before finding the scale factor you must make sure that
both measurements use the same unit of measure.
1100(12) 13,200 inches
A space shuttle is about 122 feet in length. The
Science Club plans to make a model of the space
shuttle with a length of 24 inches. What is the scale
factor of the model compared to the real space
shuttle?
The two polygons are similar. Write a similarity
statement. Then find x, y, UV, and the scale factor.
HOMEWORK
• Page 293
  #11 – 20
  #34 - 39

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Geometry/Notes 6.2

  • 1.
  • 2. SIMILAR POLYGONS • How can I identify a similar figure? • How can I solve problems using the scale factor?
  • 3. SIMILAR POLYGONS • Similar Polygons – Two polygons are similar if and only if their corresponding angles are congruent and the measures of their corresponding sides are proportional.
  • 7. An architect prepared a 12-inch model of a skyscraper to look like a real 1100-foot building. What is the scale factor of the model compared to the real building? Before finding the scale factor you must make sure that both measurements use the same unit of measure. 1100(12) 13,200 inches
  • 8. A space shuttle is about 122 feet in length. The Science Club plans to make a model of the space shuttle with a length of 24 inches. What is the scale factor of the model compared to the real space shuttle?
  • 9. The two polygons are similar. Write a similarity statement. Then find x, y, UV, and the scale factor.
  • 10. HOMEWORK • Page 293 #11 – 20 #34 - 39