Medium.png
If two equal chords of a circle intersect each other. Verify that they are divided into equal parts at the point of intersection
 
Explanation:
 
Now, Draw \(OM⊥ AB\), \(ON⊥ CD\) and join \(OE\), where \(O\) is the centre of circle.
 
YCIND_240409_6095_39.png
 
In \(△OME\) and \(△ONE\),
 
\(OM = \)      []
 
\(OE = \)      [common side]
 
Also, \(∠OME=ONE=\)\(^°\)
 
Therefore, \(△OME≅△ONE\)  []
 
Now, \(EM=\) [CPCT]      .....(1)
 
Also, \(AB = CD\).
 
On dividing both sides by \(2\),
 
\(\frac{AB}{2}=\frac{CD}{2}\)
 
Therefore, \(AM=\)          .....(2) [Perpendicular drawn from the centre of a circle to a chord, bisects it]
 
Now, adding (1) and (2) we get,
 
\(EM + AM = EN + CN\)
 
Therefore, \(AE=\)         .....(3)
 
Now, \(AB =CD \).
 
On subtracting \(AE\) from both the sides,
 
\(AB − AE = CD− AE\) 
 
\(BE = CD − CE\)    [from (3)]
 
That is, \(BE =\)
 
Hence, proved.