Copyright

Ch 30: Saxon Algebra 2: Circles

About This Chapter

The Circles chapter of this Saxon Algebra 2 Companion Course helps students learn the essential lessons associated with circles. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Circle textbook chapter.

How It Works:

  • Identify the lessons in the Saxon Circles chapter with which you need help.
  • Find the corresponding video lessons with this companion course chapter.
  • Watch fun videos that cover the circles topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our

instructors.

Students will learn:

  • How to calculate the diameter, radius and chord of a circle
  • Ways to find the arc length of a sector
  • Inscribed and central angles
  • Circle tangents
  • Method used to draw circumscribed and inscribed circles
  • How to measure angles and lengths involving tangents, chords and secants

Saxon is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.

9 Lessons in Chapter 30: Saxon Algebra 2: Circles
Test your knowledge with a 30-question chapter practice test
How to Find the Diameter of a Circle: Definition, Formula & Example

1. 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.

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.

Chord of a Circle: Definition & Formula

3. Chord of a Circle: Definition & Formula

In this lesson, you'll learn the definition of a chord of a circle. You will also learn the formulas to find the chord of a circle and then look at some examples.

Arc Length of a Sector: Definition and Area

4. Arc Length of a Sector: Definition and Area

In this lesson, we'll slice up a circle like it's a pizza and learn how to find out useful information about our slices. We'll find out the area of these sectors, or pie slices. We'll also learn about arc lengths.

Central and Inscribed Angles: Definitions and Examples

5. Central and Inscribed Angles: Definitions and Examples

When we're working with circles, there are two key angles to know: central angles and inscribed angles. These angles have a few special theorems, which we'll discuss and practice using in this lesson.

Tangent of a Circle: Definition & Theorems

6. Tangent of a Circle: Definition & Theorems

What happens when a line just barely touches a circle? It's a tangent! In this lesson, we'll learn all about tangents to circles, including a few key theorems. We'll also look at tangent circles.

How to Draw Circumscribed & Inscribed Circles

7. How to Draw Circumscribed & Inscribed Circles

Drawing accurate circumscribed or inscribed circles can be a tricky process. In this lesson, we'll explore the process for drawing perfect inscribed and circumscribed circle for any polygon where it's possible.

Measurements of Angles Involving Tangents, Chords & Secants

8. Measurements of Angles Involving Tangents, Chords & Secants

When lines and circles meet, angles are formed. Fortunately, we can determine the measure of these angles, whether they're formed by tangents, secants or chords, just by knowing the measure of the created arcs.

Measurements of Lengths Involving Tangents, Chords and Secants

9. Measurements of Lengths Involving Tangents, Chords and Secants

The lengths of chords, tangents and secants take on unique relationships when they're drawn on circles. In this lesson, we'll define those relationships and see them in action.

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

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Support