1. What is the radius of a circle?
2. Which statement matches the topic "Relationships and formulas between radius, diameter, and circumference"?
3. Which statement matches the topic "Definition and properties of central angles, arcs, and circular sectors"?
Circle — basic elements?
Center, radius, chord, diameter, circumference.
Radius — definition?
Line from center to circle edge.
Diameter — relation to radius?
Diameter is twice the radius.
Circumference formula?
C = 2πr or πd.
Central angle — property?
Equals the measure of its intercepted arc.
Arc length — proportional to?
Central angle measure.
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