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vatsarudransh5854:
please see example 2 of circles chapter pg no 178 read it carefully
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Hey dude,
Here is your answer
Given:-- AB and CD are two chords of a circle,
With Centre O intersecting at a point E
Prove:-- AB=CD
Proof:-- angle LOE=180°-90°- angle LEO=90°- angle LEO [ angle some property ]
90°- angle AEQ=90°-angle DEQ
90°-angle MEO= angle MOE
In triangle OLE and OME,
Angle LEO=angle MEO
Angle LOE= angle MOE
(proved)
EO=EO (common)
OLE congruent OME
OL=OM ( cpct)
AB =CD (cpct)
Hope it is helpful for you ☯️☯️☯️☯️☯️
Thank you ☺️☺️☺️
Here is your answer
Given:-- AB and CD are two chords of a circle,
With Centre O intersecting at a point E
Prove:-- AB=CD
Proof:-- angle LOE=180°-90°- angle LEO=90°- angle LEO [ angle some property ]
90°- angle AEQ=90°-angle DEQ
90°-angle MEO= angle MOE
In triangle OLE and OME,
Angle LEO=angle MEO
Angle LOE= angle MOE
(proved)
EO=EO (common)
OLE congruent OME
OL=OM ( cpct)
AB =CD (cpct)
Hope it is helpful for you ☯️☯️☯️☯️☯️
Thank you ☺️☺️☺️
Answered by
2
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Given that AB and CD are two chords of a circle, with center O intersecting at a point E.
PQ is a diameter passing through E, such that∠ AEQ = ∠ DEQ
Draw OL ⊥ AB and OM ⊥ CD.
In right angled ∆OLE
∠LOE + 90° + ∠ LEO = 180° (Angle sum property of a triangle)
∴∠LOE = 90° – ∠LEO
= 90° – ∠AEQ = 90° – ∠DEQ
= 90° – ∠MEO = ∠MOE
In triangles OLE and OME,
∠LEO = ∠MEO
∠LOE = ∠MOE (Proved)
OE = OE (Common side)
∴ ΔOLE ≅ ΔOME
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