If two equal chords of a circle intersect within the circle, prove that the line
joining the point of intersection to the centre makes equal angles with the chords
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For the diagram REFER THE ATTACHMENT
Step-by-step explanation:
Given:
Let AB &CD be two equal chords intersecting at point X
To Prove:
OX makes equal angles with the chord i,e, ∠OXA = ∠OXD
Proof:
Draw OM ⊥ AB & ON ⊥ CD
In ∆OMX and ∆ONX
∠OMX = ∠ONX [Each 90°]
OX = XO [Common]
OM = ON [AB and CD are equal chords and equidistant from centre]
By RHS(Right Angle ,Hypotenuse, Side) criteria
∆OMX ≈ ∆ONX
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