Question

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Answer 1

m∠ABF = 138°

Explanation:

We know that ∠ABD = 84°.

We also know that FBE bisects ∠ABD.

This means that ∠ABE and ∠EBD are equal to
`(84)/(2)=42`.

The angle of ∠ABF is equal to
`180-42=138`.

So m∠ABF = 138°