Changes
From Karnataka Open Educational Resources
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, 09:30, 7 May 2019
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| ====== [[Congruent circles|Congruent circles]] ====== | | ====== [[Congruent circles|Congruent circles]] ====== |
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| + | ====== [[Secant and tangent of a circle]] ====== |
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| ==== Concept #3: Circles and Lines ==== | | ==== Concept #3: Circles and Lines ==== |
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| ==== 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. |
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| + | The theorems that involve chords of a circle are : |
| + | * Perpendicular bisector of a chord passes through the center of a circle. |
| + | * Congruent chords are equidistant from the center of a circle. |
| + | * If two chords in a circle are congruent, then their intercepted arcs are congruent. |
| + | * If two chords in a circle are congruent, then they determine two central angles that are congruent. |
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| + | ====== [[Perpendicular bisector of a chord passes through the center of a circle]] ====== |
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| + | ====== [[Congruent chords are equidistant from the centre of a circle|Congruent chords are equidistant from the center of a circle]] ====== |
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| ===== Activities ===== | | ===== Activities ===== |