Question

In ΔABC if DE ∥BC then which of following is wrong ?

a)



=





b)



=





c)



=





d)



=



​

Answer 1

Answer:

In △ADE and △ABC

∠ADE=∠ABC (As DE∥BC) Corresponding angles

∠AED=∠ACB (As DE∥BC) Corresponding angles

∠DAE=∠BAC (common angle)

∴△ADE∼△ABC by AAA

⇒

7

3

=

x

2

⇒x=4.7cm