Question

plz tell the answer i have online test tomorrow​

Answer 1

$i)BE \:is \:Transversal \: to \: AB \:and \: EF$

$\angle {ABE} = \angle {BEF} = 70\degree$

/* Alternate angles are equal */

$\therefore AB \parallel EF \: --(1)$

$ii)CE \:is \:Transversal \: to \: CD \:and \: EF$

$\angle {DCE} + \angle {CEF}$

$= 140\degree + 40 \degree$

$= 180\degree$

/* Sum of interior angles same side of the the Transversal is supplementary */

$\therefore EF \parallel CD \: --(2)$

/* From (1) and (2) */

$AB \parallel EF \: and \: EF \parallel CD$

$\implies AB \parallel CD$

/* Transitive Property */

•••♪