#### Answer

m$\angle$3=40$^{\circ}$

#### Work Step by Step

m$\angle$3=.5(AB-CD)
m$\angle$3=.5(110-30)
m$\angle$3=40$^{\circ}$

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m$\angle$3=40$^{\circ}$

m$\angle$3=.5(AB-CD)
m$\angle$3=.5(110-30)
m$\angle$3=40$^{\circ}$

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