Circle Terminology - Radius Diameter Sector Segment Chord Arc Tangent | Geometry | Math | FuseSchool

Click here to see more videos: DESCRIPTION: There are some key words we need to know for circles: radius, circumference, diameter, sector, segment, tangent, chord and arc. In this video we discover what they all mean. The radius is the distance from the centre of a circle to a point on the circle. A diameter is the distance across a circle through its centre point. The circumference is the distance around the edge of a circle. A sector is the part of a circle enclosed by two radii of a circle and their intercepted arc. A pie-shaped part of a circle. A segment is the region between a chord of a circle and its associated arc. A tangent is a line that touches a circle at only one point. A chord is a line that links two points on a circle or curve (it doesn’t have to pass through the centre). An arc is a part of the circumference. VISIT us at, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Twitter: Access a deeper Learning Experience in the FuseSchool platform and app: Friend us: This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us:

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