About This Chapter
How It Works:
- Identify the lessons in the Holt McDougal Similarities chapter with which you need help.
- Find the corresponding video lessons with this companion course chapter.
- Watch fun videos that cover the similarities 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:
- The definition of similar polygons
- How to construct similar polygons
- Examples of a scale factor
- Dilation in math
- The AA, SSS and SAS similarity theorems
- Ways to identify similar triangles
- The triangle proportionality theorem
- How to perform similarity transformations
Holt McDougal is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.
1. 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.
2. 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!
3. 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.
4. 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.
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Other chapters within the Holt McDougal Larson Geometry: Online Textbook Help course
- Chapter 1: Essentials of Geometry
- Chapter 2: Reasoning and Proof
- Chapter 3: Parallel and Perpendicular Lines
- Chapter 4: Congruent Triangles
- Chapter 5: Relationship Within Triangles
- Chapter 7: Right Triangles and Trigonometry
- Chapter 8: Quadrilaterals
- Chapter 9: Properties of Transformations
- Chapter 10: Properties of Circles
- Chapter 11: Measurements of Figures and Solids
- Chapter 12: Probability