"Fit polygons together to make loops. Discover the patterns."Octagons can be fitted together to make loops. Try it for yourself with this applet! How many octagons do you need to make a loop? Are there certain numbers of octagons that will not make a loop? What is the inside perimeter of the shape? What is the outside perimeter? The perimeters form and interesting pattern. Can you find a formula that links the perimeter...

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