24.如圖,已知正方形ABCD與EBGF,將正方形EBGF繞點(diǎn)B旋轉(zhuǎn),連接AE,AF,CG.
(1)求證:△ABE≌△CBG;
(2)當(dāng)點(diǎn)G在正方形ABCD內(nèi)部時(shí),連接EG交邊AB于點(diǎn)H,猜想:EH
2,GH
2與BH
2與之間的數(shù)量關(guān)系,并證明你的猜想.
(3)若AB=6,BG=3,在旋轉(zhuǎn)過(guò)程中,當(dāng)點(diǎn)A,E,F(xiàn)三點(diǎn)共線時(shí),請(qǐng)直接寫(xiě)出線段AF的長(zhǎng).