Theorem 9.1 - Class 9 - Equal chords subtend equal angles at center
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Theorem 9.1 - Class 9 - Equal chords subtend equal angles at center
Theorem 9.1Equal chords of a circle subtend equal angles at the center.Given: A circle with center O. AB and CD are equal chords of circle i.e. AB = CDTo Prove : ∠AOB = ∠DOC Proof : In ΔAOB & ΔDOC AO = OD AB = CD OB = OC ∴ ∆AOB ≅ ∆ DOC ∴ ∠ AOB =
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Subtended Angle Definition
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