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spirals

spirals. A spiral winds in a continuous curve round a point. Some spirals are man made. Others are found in natural things such as plants and animals. Spirals in Circles. This type of spiral is called an Archimedean spiral after the Greek mathematician Archimedes.

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spirals

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  1. spirals

  2. A spiral winds in a continuous curve round a point.

  3. Some spirals are man made. Others are found in natural things such as plants and animals.

  4. Spirals in Circles

  5. This type of spiral is called an Archimedean spiral after the Greek mathematician Archimedes. In an Archimedean spiral the gap between the curves of the spiral stays the same.

  6. Archimedes was a mathematician who lived in Greece from 287 BC to 212 BC.

  7. Greece

  8. Archimedes drew a special spiral by pulling the legs of a pair of compasses apart while turning the compasses.

  9. Circles that are one inside the other and have the same centre are called concentric circles.

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