4th Grade Math: Triangles - Videos & Lessons

About This Chapter

Our fun video lessons and short quizzes are useful tools for 4th graders who need to learn about or catch up on triangles. Lessons are broken down into small chunks to help students learn just the critical concepts they need.

4th Grade Math: Triangles - Chapter Summary

Assist your 4th graders with their review of triangles through the entertaining video lessons available in this chapter. Students can quickly get up to speed on properties of triangles and will be able to practice identifying triangles and solving for angles. Each lesson has a quiz so you'll be able to easily gauge your 4th graders' knowledge of the topics presented in the video. Once they've watched all the videos in the chapter, students can take a chapter exam to further reinforce their understanding of triangles.

Chapter Lessons and Objectives

Lesson	Objective
Triangles: Definition and Properties	This lesson covers common vocabulary for triangles and their parts.
Classifying Triangles by Angles and Sides	Students learn to classify triangles by angles and sides and study common triangle types.
Interior and Exterior Angles of Triangles: Definition & Examples	Instructors use examples to demonstrate how to find a triangle's interior and exterior angles.
How to Identify Similar Triangles	With this lesson, students learn methods for identifying similar triangles.
Angles and Triangles: Practice Problems	Students can practice solving for triangles and angles.
Practice Identifying Triangles	The lesson lets students practice identifying acute, right, equilateral, isosceles and other types of triangles.

6 Lessons in Chapter 17: 4th Grade Math: Triangles

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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.

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.

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.

4. 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.

5. 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.

6. Practice Identifying Triangles

After watching this video lesson, you will be able to identify all kinds of triangles. You'll learn the identifying factors of each type of triangle, including the kinds of angles and lines to look for.

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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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Visit the 4th Grade Math: Practice & Review page to learn more.

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