# Ch 19: Properties of Triangles

Use the lessons in this chapter to prepare for geometry questions on the SAT level 1 mathematics subject test. Instructors cover triangle sides, bisectors, angles and more to get you ready for exam day.

## Properties of Triangles - Chapter Summary

Instructors teaching this chapter discuss triangle properties along with tips for classifying and identifying similar triangles so you can ace these types of questions on the SAT level 1 mathematics subject test. Lessons cover the following topics:

• Triangle angles and sides
• Interior and exterior angles
• Properties of concurrent lines
• Median, altitude and angle bisectors
• The Pythagorean theorem

If you're getting ready to take this SAT subject test, our instructional videos and transcripts could prove to be a useful study tool. Lessons are taught by knowledgeable instructors who include plenty of illustrations and examples to drive home key points. Short multiple-choice quizzes are also available to help affirm your understanding of these concepts, pinpoint areas requiring additional study and familiarize you with test question formatting.

### Properties of Triangles - Chapter Objectives

Lessons in this chapter are designed to help you prepare for the SAT level 1 math exam's geometry and measurement questions, which comprise roughly 40% of the test and cover such topics as right triangle trigonometry and coordinate geometry.

Your scores on these and other content domains covering algebra, functions, number operations, statistics and probability can be used to meet college admissions requirements or make your application stand out if math is an area where you excel. College admissions departments might also use your scores on the subject test to place you in the appropriate math classes.

8 Lessons in Chapter 19: Properties of Triangles
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.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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