Perpendicular from the Center to a Chord Bisects the Chord
If a diameter...
Question
If a diameter of a circle bisects each of the two chords of a circle then prove that the chords are parallel.
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Solution
Given: AB and CD are two chords of a circle with centre O. Diameter POQ bisects them at points L and M. To prove: AB || CD Proof: AB and CD are two chords of a circle with centre O. Diameter POQ bisects them at L and M. Then OL ⊥ AB Also, OM ⊥ CD ∴ ∠ ALM = ∠ LMD = 90 o Since alternate angles are equal, we have:AB|| CD