Question

please solve this guys , its very important ​

Answer 1

ABC = DCE. (since AB||DF)

DCE = 70°

ECF = 180° - DCE

= 180° - 70°

ECF = 110°

EFD = 180° - (CEF + ECF)

= 180° - (30° + 110°)

= 180° - (140°)

EFD = 40°

Answer 2

Here, Given : AB || DF so, AB || DC .........✓✓

now, if AB||DC so, Angle ABC + Angle DCB = 180

=. 70 + angle DCB = 180

=. angle DCB = 180 - 70 = 110

so, Angle DCB = Angle FCE { vertically opposite angle}

In ∆ FCE ,. angle FCE = 110

angle CEF = 30 and We have to find Angle EFD

Triangle total sum of angle is 180

so, 110+30+angle EFD = 180

angle EFD = 180 - (110+30)

Angle EFD = 40°

I hope it will help you