Parts of Circles

Radius, chord, diameter, secant, and tangent.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

Parts of Circles

by CK-12 //at grade
This concept teaches students the vocabulary for the parts of circles, including lines passing through circles.
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• PLIX

Parts of Circles: Chords

by CK-12 //at grade
Parts of Circles Interactive
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• PLIX

Geometry Software for Constructions: Build a Blooming Flower

by CK-12 //at grade
Parts of Circles Interactive
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• Video

Parts of Circles Principles

by CK-12 //at grade
This video gives more detail about the mathematical principles presented in Parts of Circles.
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• Video

Parts of Circles Examples

by CK-12 //at grade
This video shows how to work step-by-step through one or more of the examples in Parts of Circles.
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• 2
• Critical Thinking

Parts of Circles Discussion Questions

by CK-12 //at grade
A list of student-submitted discussion questions for Parts of Circles.
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• Real World Application

A Roundabout Way Home

by CK-12 //at grade
Find out why roundabouts are safer than traditional intersections.
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• Study Guide

Properties of a Circle Study Guide

by CK-12 //at grade
This study guide reviews the terminology for circles (tangent, arcs, central angles) and the equation for a circle.
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