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# Similar Polygons and Scale Factors

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Similar Polygons and Scale Factors

This concept teaches students what similar polygons are and how to use scale factors to solve for missing information in similar polygons.

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## Similar Polygons and Scale Factors: Washington Monument Model

Similar Polygons and Scale Factors Interactive

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• Video

## Similar Polygons and Scale Factors Principles

This video gives more detail about the mathematical principles presented in Similar Polygons and Scale Factors.

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• Video

## Similar Polygons and Scale Factors Examples

This video shows how to work step-by-step through one or more of the examples in Similar Polygons and Scale Factors.

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• Practice
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## Similar Polygons and Scale Factors Practice

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• Critical Thinking

## Similar Polygons and Scale Factors Discussion Questions

A list of student-submitted discussion questions for Similar Polygons and Scale Factors.

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## Similar Polygons and Scale Factors Pre Read

To encourage students’ critical thinking about vocabulary concepts, to allow students to reflect on their knowledge of individual vocabulary words, and to increase vocabulary comprehension using the Vocabulary Self-Rate.

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## Similar Polygons and Scale Factors Post Read

To encourage students’ critical thinking about vocabulary concepts, to allow students to reflect on their knowledge of individual vocabulary words, and to increase vocabulary comprehension using the Vocabulary Self-Rate.

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• Real World Application

## Super Models

Learn how engineers use scale models to test their designs before they turn them into reality.

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• Real World Application

## Crazy Quilt

Find out how similar triangles are used in quilting.

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• Study Guide