One of the most important shapes in geometry is that of a circle. It is used in mechanics and engineering (links in with algebra and trigonometry/study of triangles). At this stage of learning you just have to know all the names of parts of a circle.
They are...
- Radius - bone from elbow
- Tangent - road on a tyre
- Diameter - diaphragm through your middle
- Chord - guitar string across the hole
- Arc - the bottom of a boat (ark)
- Circumference - circle made from circumference
- Sector - area made from radius'
- Segment - area made from a chord (segment of music)
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