# Ch 18: Polygons

Review how to graph a circle and other rules of polygons to prepare you for the SAT subject exam in mathematics. Video lessons and quizzes help you review polygon geometry in a simple and clear manner.

## SAT Mathematics: Polygons - Chapter Summary

Learn how to graph circles, tell whether or not two triangles are identical, and more using our online video lessons. Lessons in this chapter include:

• Properties of shapes: triangles, circles, rectangles, quadrilaterals, parallelograms, trapezoids and polygons
• Graphing circles: identifying the formula, center and radius
• How to identify similar triangles
• Applications of similar triangles
• Properties of congruent and similar shapes
• Applying scale factors to perimeter, area and volume of similar figures

Our professional video instructors show you step-by-step how to apply your knowledge of polygons to questions you're likely to find on the SAT. Use tools such as self-assessment quizzes to help you prepare for the exam.

### SAT Mathematics Objectives

The Level 1 SAT mathematics subject test is for students who've completed at least three years of college-prep mathematics, including one year of geometry and two of algebra. Students interested in pursuing STEM (science, technology, engineering, and mathematics) or economics degree programs in college sometimes use the math test to help their applications stand out.

In all, you'll answer about 50 questions, all multiple choice. Geometry and measurement questions represent about 38%-42% of the total exam. You may encounter questions on plane Euclidean geometry, coordinate geometry, trigonometry, and 3-dimensional geometry.

4 Lessons in Chapter 18: Polygons
Test your knowledge with a 30-question chapter practice test
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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