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Home > CCG > Chapter 4 > Lesson 4.1.2 > Problem 4-18

4-18.

The triangles shown at right are similar.  

 

  1. What is the ratio of side length to side length ?

  2. Use a ratio to compare the perimeters of and . How is the perimeter ratio related to the side length ratio?

    In part (a), you found that the zoom factor between the two triangles is .
    Now use this information to find the perimeters of each triangle, then find the ratio between them.

  3. If you have not already done so, find the length of .