In this chapter, we will start with a review of ratios and proportions. Second, we will introduce the concept of similarity. Two figures are similar if they have the same shape, but not the same size. We will apply similarity to polygons, quadrilaterals and triangles. Then, we will extend this concept to proportionality with parallel lines and dilations. Finally, there is an extension about self-similarity, or fractals, at the end of the chapter.

## Chapter Outline

- 7.1. Ratios and Proportions
- 7.2. Similar Polygons
- 7.3. Similarity by AA
- 7.4. Similarity by SSS and SAS
- 7.5. Proportionality Relationships
- 7.6. Similarity Transformations
- 7.7. Extension: Self-Similarity
- 7.8. Chapter 7 Review

### Chapter Summary

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## Description

This chapter starts with a review of ratios and proportions and then introduces the concept of similarity. Similarity is applied to polygons, quadrilaterals, triangles, proportionality with parallel lines, dilations and fractals.

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## Date Created:

Feb 23, 2012## Last Modified:

Aug 28, 2013
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