Ch 19: Identifying Triangles

About This Chapter

This chapter contains entertaining video lessons that teach 3rd to 5th graders the essentials of identifying triangles. Students can complete short lesson quizzes, as well as a chapter exam, to check their understanding of the material.

Identifying Triangles - Chapter Summary

In this chapter, your 3rd, 4th or 5th grader can explore topics like the properties of triangles and how to classify triangles through fun video lessons. These videos don't require much time to watch, as the average length is under 10 minutes. Features like video transcripts and self-assessment quizzes allow 3rd-5th grade students to study the chapter material and assess their understanding of it.

Chapter Lessons and Objectives

LessonObjective
Triangles: Definition and Properties Students learn what a triangle is as well as its parts.
Classifying Triangles by Angles and Sides The instructor discusses types of triangles and how they're classified by their angles and sides.
Interior and Exterior Angles of Triangles: Definition & Examples In this lesson, students learn how to identify triangles' interior and exterior angles.
How to Identify Similar Triangles Students learn how to use shortcuts to identify similar triangles.
Angles and Triangles: Practice ProblemsThis lesson allows students to practice solving angle and triangle problems.
Practice Identifying TrianglesStudents practice identifying the types of angles and triangles.

6 Lessons in Chapter 19: Identifying 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.

How to Identify Similar Triangles

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.

Angles and Triangles: Practice Problems

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.

Practice Identifying Triangles

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.

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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