In Fig. 6.17, (i) and (ii), DE || BC. Find EC in (i) and AD in (ii)

(i) Let us take EC = x cm

Given: DE || BC

Now, using basic proportionality theorem, we get:

=

x =

x = 2 cm

Hence, EC = 2 cm

(ii) Let us take AD = x cm

Given: DE || BC

Now, using basic proportionality theorem, we get

x =

Hence, AD = 2.4 cm