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Circle arcs and sectors
This tutorial will review some of the basic of circles and then think about lengths of arcs and areas of sectors.
Formal definition of a circle. Tangent and secant lines. Diameters and radii. major and minor arcs
A circle is at the foundation of geometry and how its parts relate to each other is both completely logical and a wonder.
Relate the length of an arc to the circumference of a whole circle.
Relate the area of a sector to the area of a whole circle.