Ch 8: McDougal Littell Geometry Chapter 8: Similarity

About This Chapter

The Similarity chapter of this McDougal Littell Geometry Textbook companion course helps students learn essential geometry lessons of similarity. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Similarity textbook chapter.

How it works:

  • Identify the lessons in the McDougal Littell Geometry Textbook Similarity chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the similarity topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Ratios and proportions
  • Computing ratios
  • Properties of proportions
  • Proportion defined, plus application and examples
  • Using properties of proportions
  • Geometric mean
  • Solving problems involving proportions
  • Similar polygons
  • Writing similarity statements
  • Comparing similar polygons
  • Constructing similar polygons
  • Identifying similar triangles
  • Similar triangles and the AA criterion
  • Writing proportionality statements
  • The transitive property of similar triangles
  • Applications of similar triangles
  • Proving similarity theorems about triangles
  • Practice proving relationships
  • Triangle proportionality theorem
  • Properties of dilations
  • Identifying dilations and finding scale factors
  • Dilation in a coordinate plane

McDougal Littell Geometry is a registered trademark of McDougal Littell, which is not affiliated with Study.com.

10 Lessons in Chapter 8: McDougal Littell Geometry Chapter 8: Similarity
Test your knowledge with a 30-question chapter practice test
Ratios and Proportions: Definition and Examples

1. Ratios and Proportions: Definition and Examples

Watch this video lesson to learn how ratios and proportions are related. Also, learn how ratios and proportions are used in real life and how you can apply them to yours.

Proportion: Definition, Application & Examples

2. Proportion: Definition, Application & Examples

When we want to compare one ratio, or fraction, to another equivalent ratio, it's a proportion. Learn all about proportions and practice solving proportion problems in this lesson.

Geometric Mean: Definition and Formula

3. Geometric Mean: Definition and Formula

Watch this video lesson to learn how different the geometric mean is from the arithmetic mean, or average, that we are all so familiar with. Learn in what circumstance the geometric mean is preferred. Also, learn the formula and how to use it.

Solving Problems Involving Proportions: Definition and Examples

4. Solving Problems Involving Proportions: Definition and Examples

Learn how you can use proportions to find missing sides and how to increase or decrease the sizes of objects to create models of them in this video lesson.

Similar Polygons: Definition and Examples

5. Similar Polygons: Definition and Examples

Watch this video to learn what makes two polygons similar to each other. You'll also learn the one distinguishing aspect of similar polygons and see an example of how to compare two polygons.

Constructing Similar Polygons

6. Constructing Similar Polygons

This lesson will teach you how to construct similar polygons, which are very useful in many quantitative fields. You'll learn that all of this has something to do with, of all things, snowflakes!

How to Identify Similar Triangles

7. How to Identify Similar Triangles

Similar triangles have the same characteristics as similar figures but can be identified much more easily. Learn the shortcuts for identifying similar triangles here and test your ability with a quiz.

The Transitive Property of Similar Triangles

8. The Transitive Property of Similar Triangles

Watch this video lesson and you will understand what the transitive property is and how it applies to similar triangles. Watch as we apply the transitive property to three similar triangles.

Applications of Similar Triangles

9. Applications of Similar Triangles

Similar triangles are used to solve problems in everyday situations. Learn how to solve with similar triangles here, and then test your understanding with a quiz.

Triangle Proportionality Theorem

10. Triangle Proportionality Theorem

Watch this video lesson to learn all about the triangle proportionality theorem and how you can use this interesting theorem to help you solve problems. Learn how a parallel line can create sides that are proportional to each other.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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