Ch 24: FTCE Math: Properties of Triangles

About This Chapter

Make use of the lessons in this chapter to help prepare you for your FTCE Math exam. Review important topics on the properties of triangles with the short video lessons and self-assessment quizzes.

FTCE Math: Properties of Triangles - Chapter Summary

Revisit the different properties of triangles in preparation for the FTCE Math test. This chapter is filled with lessons that lay out the information on properties of triangles that you need to know for the test. You'll find the following topics covered in this chapter:

  • Various types of triangles
  • Exterior and interior angles of triangles
  • Angle bisectors, altitude and median
  • Centroids
  • Properties of the orthocenter
  • Triangle inequality

The video lessons contained within this chapter are short and entertaining. The lessons are taught by well-educated instructors who want to see you succeed on your FTCE Math exam. After you are done with each lesson, take our multiple-choice quizzes to test yourself on what you have just reviewed and studied. Our quizzes give you immediate feedback so you know exactly what you need to focus your studies on. You can take the quizzes as many times as you would like until you feel confident that you have retained the information needed.

8 Lessons in Chapter 24: FTCE Math: Properties of Triangles
Test your knowledge with a 30-question chapter practice test
Triangles: Definition and Properties

1. Triangles: Definition and Properties

What makes a shape a triangle? In this lesson, we'll explore the definition of a triangle, then analyze the parts of triangles, including the vertices, base and height.

Classifying Triangles by Angles and Sides

2. Classifying Triangles by Angles and Sides

Not all triangles are the same. There are equilateral, isosceles and scalene triangles. Then there are right, acute and obtuse triangles. In this lesson, we'll learn how to classify triangles using their sides and angles.

Interior and Exterior Angles of Triangles: Definition & Examples

3. Interior and Exterior Angles of Triangles: Definition & Examples

Knowing just a few things about the interior or exterior angles of triangles is sometimes all you need to put all the pieces together. Find out more in this lesson.

Angles and Triangles: Practice Problems

4. Angles and Triangles: Practice Problems

Want more practice solving with angle pairs? How about more review for solving angles in triangles? Look no further. Get more practice here, and test your ability with a quiz.

Median, Altitude, and Angle Bisectors of a Triangle

5. Median, Altitude, and Angle Bisectors of a Triangle

Line segments in triangles are just clutter; they have special names and qualities depending on how they're drawn. In this lesson, we'll learn about medians, altitudes and angle bisectors.

Centroid: Definition, Theorem & Formula

6. Centroid: Definition, Theorem & Formula

Have you ever wondered how to find the balancing point of a triangle? The answer can be found in this lesson on the centroid of a triangle! We'll learn how medians are used to locate the centroid and then discuss its various properties.

Orthocenter in Geometry: Definition & Properties

7. Orthocenter in Geometry: Definition & Properties

This lesson involves a well-known center of a triangle called the orthocenter. Its definition and properties will be discussed, and an example will be worked showing how to find its location on a graph.

Triangle Inequality: Theorem & Proofs

8. Triangle Inequality: Theorem & Proofs

In this lesson, we will use definitions and proofs to learn what the triangle inequality theorem is, why it works, and how to use it to determine if three given line segments can form a triangle.

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

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Other Chapters

Other chapters within the FTCE Mathematics 6-12 (026): Practice & Study Guide course