Spiral (English)
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Definition (keystage 2)
The path of a point turning around and moving away from a fixed point, its centre.
Spirals are often found in nature- sea shells, snails, flowers and fir cones.
A spiral in three dimensions is called a helix.
Spirals are often found in nature- sea shells, snails, flowers and fir cones.
A spiral in three dimensions is called a helix.
Definition (keystage 3)
A flat shape made of a curved line which winds round a central point while getting closer to it. There are several types of spiral; each has a different rule about how fast the line gets closer to the central point compared with how fast it winds round.
Relations
- broader:
- (en) Curve
- narrower:
- (en) Equiangular spiral
- (en) Fermat's spiral
- (en) Hyperbolic spiral
- (en) Lituus
- (en) Sinusoidal spiral
- (en) Spiral of Archimedes
- references:
- (en) Helix
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