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Ch 17: 5th Grade Math: Triangles

About This Chapter

This Triangles chapter is designed to teach your 5th grade students all about the definition, angles and properties of triangles. You will find short video lessons, transcripts and self-assessment quizzes within this chapter.

Triangles - Chapter Summary

The Triangles chapter's video lessons teach students to classify triangles according to their sides and angles. Your 5th grade students can learn about the base and height of triangles as well as the characteristics of equilateral, obtuse and acute triangles. Administer the chapter examination to monitor your students' retention of the material.

Chapter Lessons and Objectives

Lesson Objective
Triangles: Definition and Properties Instructors teach the definition and various parts of a triangle.
Classifying Triangles by Angles and Sides Students learn the differences between various kinds of triangles.
Interior and Exterior Angles of Triangles: Definition and Examples This lesson focuses on interior and exterior angles and includes practice problems.
How to Identify Similar Triangles Students learn what similar triangles are along with triangle similarity theorems.
Angles and Triangles: Practice Problems In this lesson, instructors cover solving angles and triangles through practice problems.
Practice Identifying Triangles Students learn to differentiate between different kinds of triangles in this lesson.

6 Lessons in Chapter 17: 5th Grade Math: 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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