Q. 3 C4.0( 6 Votes )

D and E are point

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 = 10.8 cm and AD = 6.3 cm.

DB = 10.8 – 6.3

DB = 4.5

…(i)

Solving for ,

We need to find AE from given AC = 9.6 cm and EC = 4 cm.

AE = AC – EC

AE = 9.6 – 4

AE = 5.6

…(ii)

As equation (i) is equal to equation (ii),

it satisfies Thale’s theorem.

Hence, we can say DE BC.

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