Learning objectives
Calculate the circumference and area of a circle and the arc length and sector area for a given central angle
Convert between degrees and radians and use radian measure in arc-length problems
Use the relationships between central angles, inscribed angles, arcs, chords and tangents
Write and interpret the equation of a circle in the xy-plane, completing the square to find its center and radius
Solve problems that combine circles with triangles, polygons or tangent lines
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