Q. 3 D4.3( 7 Votes )

D and E are point

Answer :

Here, by applying converse of Thale’s theorem we can conclude whether or not DE BC.

By Thale’s theorem,



Solving for ,


We need to find DB from given AB = 12 cm and AD = 7.2 cm.


DB = AB – AD


DB = 12 – 7.2


DB = 4.8


…(i)


Solving for ,


We need to find EC from given AC = 10 cm and AE = 6.4 cm.


EC = AC – AE


EC = 10 – 6.4


EC = 3.6


…(ii)


As equation (i) is not equal to equation (ii),



it doesn’t satisfies Thale’s theorem.


Hence, we can say DE is not parallel to BC.


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