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Circle Terms

Vocab relating to circle parts

TermDefinition
Tangent A straight line that touches the circle at one point.
Radius A straight line from the centre to the edge of a circle.
Circumference The perimeter of a circle.
Diameter A straight line from one side of a circle to another passing through the centre.
Chord Any straight line that reaches from one side of a circle to the other.
Sector An area of a circle bound by 2 radii and an arc
Segment an area of a circle created by a chord and an arc
Arc Any part of the circumference
Created by: Jgilbertlpa
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