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→Concept #4: Theorems and properties
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==== Concept #3: Circles and Lines ====
==== Concept #3: Circles and Lines ====
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+===== Activities =====
====== [[Introduction to chords]] ======
====== [[Introduction to chords]] ======
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====== [[Secant and tangent of a circle]] ======
====== [[Secant and tangent of a circle]] ======
−===== Activities =====
+===== Concept #4: Theorems and properties =====
−==== Concept #4: Theorems and properties ====
A chord is a straight line joining 2 points on the circumference of a circle.Chords within a circle can be related in many ways.
A chord is a straight line joining 2 points on the circumference of a circle.Chords within a circle can be related in many ways.
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===== Activities =====
===== Activities =====
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+====== '''[[Chord length and distance for centre of the circle]]''' ======
====== [[The longest chord passes through the centre of the circle]] ======
====== [[The longest chord passes through the centre of the circle]] ======
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====== [[Perpendicular bisector of a chord passes through the center of a circle]] ======
====== [[Perpendicular bisector of a chord passes through the center of a circle]] ======
−====== [[Congruent chords are equidistant from the centre of a circle|Congruent chords are equidistant from the center of a circle]] ======
+====== [[Congruent chords are equidistant from the centre of a circle|Congruent chords are equidistant from the center of a circle]] ======
+====== '''[[Angles in a circle subtended by a chord]]''' ======
==== Concept #5: Cyclic Quadrilateral ====
==== Concept #5: Cyclic Quadrilateral ====