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# Arcs in Circles

## Sections of a circle and central angles.

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.

## Arcs in Circles

This concept teaches students properties of arcs and central angles in circles.
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## Arcs in Circles

Arcs in Circles Interactive
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## Chords in Circles: Arc and Chord

Arcs in Circles Interactive
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## Arcs in Circles: Yin-Yang Arcs

Arcs in Circles Interactive
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## Arcs in Circles Principles

This video gives more detail about the mathematical principles presented in Arcs in Circles.
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## Arcs in Circles Examples

This video shows how to work step-by-step through one or more of the examples in Arcs in Circles.
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• Critical Thinking

## Arcs in Circles Discussion Questions

A list of student-submitted discussion questions for Arcs in Circles.
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• Real World Application

## Farming the Arc

Find out why it's better for farmers to plant their crops in arcs along the sides of hills instead of in straight lines.
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• Study Guide