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Ch 45: GACE Middle Grades Math: Circles

About This Chapter

Study this chapter's video lessons to prepare for questions on circles appearing on the GACE Middle Grades Mathematics assessment. Examine the parts of a circle and refresh your memory of how to find a circle's radius, diameter, area and circumference.

GACE Middle Grades Math: Circles - Chapter Summary

Watch the video lessons in this chapter to catch up on the parts of and formulas for circles. Whether you've forgotten what a central angle is or how to find a quarter circle's area, our instructors will help you get up to speed for the GACE Middle Grades Mathematics assessment. After finishing the chapter, you should be able to do the following:

  • Identify the parts of a circle
  • Distinguish between central and inscribed angles
  • Find the radius and diameter of a circle
  • Determine a circle's area and circumference
  • Calculate the area and perimeter of semicircles
  • Find a quarter circle's perimeter, area and radius
  • Solve word problems involving circles

Our professional instructors have created brief and engaging video lessons to make reviewing geometry topics a fun process. You can watch our videos -- loaded with graphs, animations and step-by-step examples -- on your mobile device whenever it fits your schedule. Use our lesson transcripts, which may contain links to other related text lessons, and quizzes to round out your study time.

7 Lessons in Chapter 45: GACE Middle Grades Math: Circles
Test your knowledge with a 30-question chapter practice test
Parts of a Circle

1. Parts of a Circle

After watching this video lesson, you will be able to identify the parts of a circle. You will learn the names of four different parts of a circle along with what each part does for the circle.

How to Find the Radius of a Circle: Definition & Formula

2. How to Find the Radius of a Circle: Definition & Formula

In this lesson, you will discover the definition of a radius. You will also learn how to find the radius of a circle using three different formulas based on diameter, circumference, and area.

How to Find the Diameter of a Circle: Definition, Formula & Example

3. How to Find the Diameter of a Circle: Definition, Formula & Example

Learn the definition of the diameter of a circle and how to find it using a simple formula. See some examples, then test your knowledge with a short quiz.

Circles: Area and Circumference

4. Circles: Area and Circumference

Understanding how to calculate the area and circumference of circles plays a vital role in some of our everyday functions. They serve as the foundation for operating with three-dimensional figures. Learn more about the area and circumference of circles in this lesson.

Semicircle: Definition, Perimeter & Area Formulas

5. Semicircle: Definition, Perimeter & Area Formulas

In this lesson, you'll discover what a semicircle is. You'll also discover the formulas for perimeter and area that will work on every semicircle. Then, test your knowledge by taking a brief quiz.

Quarter Circles: Calculating Area, Perimeter & Radius

6. Quarter Circles: Calculating Area, Perimeter & Radius

Watch as we solve problems involving the quarter circle in this video lesson. Learn what quarter circles look like, how to find their area, their perimeter, and their radius.

Circles in Word Problems

7. Circles in Word Problems

Watch this video lesson to learn how you can solve word problems that involve circles. Learn how the properties of circles make your problem-solving life that much easier and quicker.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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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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Other Chapters

Other chapters within the GACE Middle Grades Mathematics (013): Practice & Study Guide course

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