Build spirals and shapes with left and right handed versions.
Build Helices & Chiral Shapes

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What are chiral shapes? What is an enantiomorph? What are the simplest 2d and 3d chiral shapes?
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What is a helix and what defines if it is left or right-handed?
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What helical structure was discovered by Anthony Crick and James Watson? Who is Rosalind Franklin and what is Photo 51?
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What is a Boerdijk-Coxeter-helix?
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How are helices used in engineering? How did Henry Maudslay's very accurate helices impact engineering and manufacturing technology?
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Where do helices show up in nature? Are the shapes left or right handed? Does it matter?