Question

what will be the answer mates ???? ​

Answer 1

Answer:40 degree

angle ABC= angle DCE

angle DCE+angle ECF

such that: angle ECF becomes 110 degree

then

CEF+EFC+ECF=180

30+EFC+110=180

EFC=40

Answer 2

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Since AB 'II' CD

Angle ABC = Angle DCE = 70 ( Corresponding angles )

Now by exterior anglr property,

angle CEF + angle EFD = angle DCE

angle EFD + 30 = 70

angle EFD = 70 - 30

angle EFD = 40

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