Question

As shown in figure, is AB||EF​

Answer 1

Answer:

yes.they are parallel

Step-by-step explanation:

we can say AB // CD.

because ABC = ACD =57°

they make alternate angles.

also,

we can say EF // CD.

Because CEF + ECD = 180°

It makes allied angles.

therefore,

AB // CD // EF.

that means AB // EF

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