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UNIT 11 · LESSON 6

Arcs and Central Angles

Explore radius, diameter, circumference, area, arcs and sectors.

WHY LEARN THIS?

This idea has a purpose.

Mathematics becomes much easier when you understand what a tool was designed to accomplish. This lesson will build Arcs and Central Angles from the idea itself instead of asking you to memorize a rule first.

Places this kind of mathematics can appear:

wheels
pipes
gears
round buildings
mechanical systems
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