Q. 75.0( 1 Vote )

In the given fig.

Answer :

By converse of Thale’s theorem DE II BC


ADE = ABC = 70°


Given BAC = 50°


ABC + BAC + BCA =180° (Angle sum property of triangles)


700 + 500 + BCA = 180°


BCA = 180° - 120° = 60°


OR


EC = AC – AE = (7- 3.5) cm = 3.5 cm



So,


Hence, by converse of Thale’s Theorem, DE is not Parallel to BC.


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