# Ch 37: 6th-8th Grade Geometry: Triangles

Teach your 6th-8th grade students about the angles and properties of triangles with the help of the engaging video lessons in this chapter. Your students can learn to construct congruent triangles and identify the base, height and sides of triangles. The chapter includes short multiple-choice quizzes.

## Triangles - Chapter Summary

This chapter's online video lessons explain the meanings of terms such as centroid, orthocenter, altitude, median and incenter. The lessons explore the language of similarity, and they teach your 6th-8th grade students to differentiate between scalene, acute, isosceles, equilateral and obtuse triangles. Assess your students' comprehension of geometric triangles by administering the quizzes and chapter examination.

## Chapter Lessons and Objectives

Lesson Objective
Triangles: Definition and Properties This lesson teaches students about the various parts of triangles.
Classifying Triangles by Angles and Sides Students discover how to use a triangle's angles and sides to classify it.
Interior and Exterior Angles of Triangles: Definition and Examples This lesson explains the differences between interior and exterior angles.
How to Identify Similar Triangles Instructors describe the characteristics of similar triangles.
Angles and Triangles: Practice Problems Students learn the procedures for solving consecutive interior, corresponding, alternate exterior and alternate interior angles.
Constructing the Median of a Triangle Instructors demonstrate the use of the median line.
Median, Altitude and Angle Bisectors of a Triangle Students learn to identify the line segments of triangles.
Constructing Triangles: Types of Geometric Construction This lesson teaches students to use rulers or compasses to construct triangles.
Properties of Concurrent Lines in a Triangle Instructors teach students about the characteristics of concurrent lines.

Final Exam
Chapter Exam

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