Question

in figure show that ab ll ef​

Answer 1

According to the given figure :

∠ABC = 70°

∠BCD = 30° + 40° = 70°

that means,

Interior angle on same side of transversal

CD || EF - - - - - - (ii)

By equation i & ii

That means

AB || CD || EF

Answer 2

Step-by-step explanation:

Here is your answer dear