Respuesta :

jcherry99
E is the bisector point of AB. Perpendicular bisector means a line that cuts another line in half and meets it at the bisector point at right angles. 

Bisect means cut in half.
AE is 20
Therefore EB = 20 as well. It's the other half of the line.
NightWolf14
According to the bisector theorem if angle a f = b f

Then a e = b e

So b e = 20

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