Cut-The-Knot-Action (5)!

Dynamic & Modifiable Illustration of a Relationship Between a Conjoint Regular Pentagon and Regular Decagon. Inspired by a Tweet from Alexander Bogomolny (Cut-the-Knot Math.org)
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Tim Brzezinski —

 
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angle  ccss  ccss.hsg.co.c.10  ccss.hsg.co.c.9  common  common-core  core  decagon  exploration  interior-angle  pentagon polygons problem-set-problem regular-decagon regular-pentagon 显示更多…
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11 – 18
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English
 
 

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