Em, MF, Mn, NH and ng divide the rectangle ABCD into four equal parts, Where FG = BG + BC + CH = eh = de + Da + AF, Mn parallel AB, BC = 19, Mn = 7, find the length of ab The level is too low to pass pictures. Ad and BC are wide, DC and ab are long, e and H are on DC, F and G are on AB, m and N are in rectangular ABCD. Connect dehc, afgb, ad, CB, EM, MF, ng and HN D E H C M N A F G B

Em, MF, Mn, NH and ng divide the rectangle ABCD into four equal parts, Where FG = BG + BC + CH = eh = de + Da + AF, Mn parallel AB, BC = 19, Mn = 7, find the length of ab The level is too low to pass pictures. Ad and BC are wide, DC and ab are long, e and H are on DC, F and G are on AB, m and N are in rectangular ABCD. Connect dehc, afgb, ad, CB, EM, MF, ng and HN D E H C M N A F G B

Em, MF, Mn, NH and ng divide the rectangle ABCD into four parts with equal area. Because FG = EH and Mn is the common edge, the height of trapezoidal fgmn is equal to the height of trapezoidal ehmn, so (FG + Mn) * (BC / 2) / 2 = AB * BC / 4 has FG = BG + BC + CH = de + Da + AF, so BG + CH = de + AF = fg-bc and AF + FG + GB = de + eh + HC =