Geometry: Circles - Relationships

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A circle is a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center).

Lessons

Geometry and the Circle: Math Goodies has a set of online lessons on circles; exercises are included

Printables

A little printable I whipped up for my son for review:

I also came across this cute mnemonic aid which I added to our notebook in the picture above.


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