# pentagon...GEOMETRY

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ABCDE is a regular pentagon. FAD is an equilateral triangle, such that points F and E are on the same side of line AD. What is the measure (in degrees) of ∠FAB?

• pentagon...GEOMETRY -

angle AED = 108, so EAD = 36
FAD = 60, so FAE = 24
so, FAB = FAE+EAB = 24+108 = 132

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