In a trapezium \( ABCD\) where \( AB\) is parallel to \( DC\), the diagonals intersect at \(O\). Establish that \(\frac{AO}{BO}=\frac{CO}{DO}\)
 
Proof:
 
ques9 image2.png
 
In \(\Delta ADC\),
 
\(MO||\)
 
By
 
So, \(\frac{AM}{DM} =\)
- - - - - (1)
 
Similarly,  in \(\Delta DBA\)
 
\(MO||\)
 
\(\frac{AM}{DM} =\)
- - - - - (2)
 
From (1) and (2) we proved the result.
Answer variants:
\(\frac{BO}{DO}\)
\(DC\)
\(AB\)
\( \frac{AO}{CO}\)
\( \frac{AO}{DO}\)
\(\frac{BO}{CO}\)