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How to solve? (1 Viewer)

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kasser

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AB is a diameter of a circle and CD is a chord drawn perpendicular to A cutting it at X. Prove that CX ^2 = AX.XB
 
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braintic

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This is straight Intersecting Chords Theorem, where CX=DX because a radius perpendicular to a chord bisects the chord.
 
seanieg89

seanieg89

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If you want to prove this property, it comes out quickly from considering similar triangles.
 
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