# Ch 29: Circles

Use our video lessons and quizzes to help you understand circle properties and formulas. Learn to calculate measurements for radians, inscribed angles, arcs, tangents and chords.

## Circles - Chapter Summary

Continue your study of plane geometry with this chapter on circles. Our experienced instructors can help you study the properties of circles and provide you with tips for proving their similarity. You can also examine the radii, tangents and chords that intersect them.

Lessons showing you how to find the lengths of chords and the inscribed angles of tangents are included as well. You can also explore the relationship between arcs and radians and practice calculating the area of a sector. Additional lessons help you apply these skills when working with inscribed and circumscribed triangles and quadrilaterals.

Instructors go on to break down the formula for a circle and show you how to write it when presented with a circle's center and radius. You can also learn how to find the center and radius when given a circle's equation by completing the square. Topics of discussion found in this chapter include:

• Inscribed angles
• Tangents
• Arc length

Take advantage of the illustrations included in this chapter's video lessons to get the hang of working with circles. This same material is also presented in the form of transcripts that feature links to supplementary text lessons. Use them to discover definitions of key terms and improve your understanding of the lesson topics. There are also multiple-choice quizzes you can take at any point during your studies in order to assess your grasp of the material.

6 Lessons in Chapter 29: Circles
Test your knowledge with a 30-question chapter practice test
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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