Question 1: Because the two triangles are congruent, we can draw the following conclusions: Angle FGE= Angle MHN, Angle E= Angle N, Angle M= Angle F, Angle FHN= Angle MGE. EF=MN，EG=NH，FG=MH，FH=MG

Second question: if the conclusion from the first question is that EF = Mn = 2. 1cm, FG = FH+Hg = Mg+Hg = MH = 3.3, then Hg = MH-FH = 3.3-1.1= 2.3cm. ..

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