Q. 104.7( 3 Votes )

In the given figu

Answer :

It is given that DE || BC


∴∠ ADE = ABC (Corresponding angles)


AED = ACB (Corresponding angles)


So, by AA similarity criterion ΔADE ~ ΔABC


We know that if two triangles are similar then the ratio of their areas is equal to the ratio of the squares of their corresponding sides.





Hence, proved.


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