# Ch 39: 6th-8th Grade Geometry: Circles

The video lessons in this chapter have been created to teach middle school students geometry concepts related to circles in simple and fun ways. Expert instructors are a click away to answer any questions that come up. Use the lesson quizzes and chapter exam to assess comprehension of the material.

## 6th-8th Grade Geometry: Circles - Chapter Summary

For any middle school student who needs reinforcement or clarification about geometry concepts related to circles, the lessons in this chapter have been created to do just that. They'll learn what constitutes a circle and how to calculate the essential dimensions of this shape, including diameter and radius.

Additionally, they'll work through word problems that challenge them to solve problems using circle geometry. Dimensions of quarter circles will also be reviewed. Subject matter experts are available to answer any questions about the material. Short quizzes following each lesson and a chapter exam are available for self-assessment.

## Chapter Lessons and Objectives

Lesson Objective
Parts of a Circle Identify parts of a circle such as the center, radius, chords and diameter.
Central and Inscribed Angles: Definitions and Examples Define central and inscribed angles.
How to Find the Radius of a Circle: Definition & Formula Discover how to find the radius of a circle using a short formula.
How to Find the Diameter of a Circle: Definition, Formula & Example See how to find a circle's diameter through example problems.
Circles: Area and Circumference Learn and apply formulas to calculate area and circumference of circles.
Semicircle: Definition, Perimeter & Area Formulas Demonstrate how to calculate area, perimeter, radius and diameter of semicircles.
Quarter Circles: Calculating Area, Perimeter & Radius Explain and use formulas for calculating area, perimeter and radius of quarter circles.
Circles in Word Problems Solve word problems involving circles.

Final Exam
Chapter Exam

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