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====== Concept #3: Circles and Lines ======+
+
====== [[Sector of a circle|Sector of a circle]] ======
====== [[Sector of a circle|Sector of a circle]] ======
−==== Concept #3: Circles and Lines ====
+====== Introduction to chords ======
====== [[Secant and tangent of a circle]] ======
====== [[Secant and tangent of a circle]] ======