Dua buah bangun di bawah ini sebangun hitunglah a panjang ef.hg.ad.dc b nilai x.y dan z

A) EF : AB = FG : BC
EF : 20 = 28 : 35
35.EF = 20 . 28
35.EF = 560
EF = 560/35
EF = 16 cm
HG = \sqrt{ EF^{2} - (FG - EH)^{2} }
= \sqrt{ 16^{2} + 12^{2} }
= \sqrt{256 + 144}
= \sqrt{400}
= 20 cm
EH : AD = FG : BC
16 : AD = 28 : 35
28.AD = 16 . 35
28.AD = 560
AD = 560/28
AD = 20 cm
HG : DC = FG : BC
20 : DC = 28 : 35
28.DC = 35 . 20
28.DC = 700
DC = 700/28
DC = 25 cm
2B) X = 180° - 127°
= 53°
Y = 127°
Z = X
= 53°