Respuesta :

Step-by-step explanation:

1) m∠1 = m∠4, m∠2 = m∠3   (1) Given

2) m∠AFC = ∠1 + ∠2             (2) Angle Addition Postulate

3) m∠EFC = ∠3 + ∠4            (3) Angle Addition Postulate

4) m∠EFC = ∠1 + ∠2             (4) Substitution

5) m∠AFC = m∠EFC             (5) Transitive Property

Thnk you

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