25.已知:如圖,AB∥CD,直線EF分別交AB,CD于點(diǎn)G,H,點(diǎn)P為直線EF上的點(diǎn),連接AP,CP.
(1)如圖1,點(diǎn)P在線段GH上時(shí),請(qǐng)你直接寫(xiě)出∠BAP,∠DCP,∠APC的數(shù)量關(guān)系;
(2)如圖2,點(diǎn)P在HG的延長(zhǎng)線上時(shí),連接CP交AB于點(diǎn)Q,連接HQ,AC,若∠ACP+∠PHQ=∠CQH,求證:AC∥EF;
(3)在(2)的條件下,如圖3,CK平分∠ACP,GK平分∠AGP,GK與CK交點(diǎn)K,連接AK,若∠PQH=4∠PCK+2∠PHQ,∠CKG=∠CHQ,∠AKC+∠KAC=159°,求∠BAC的大?。?/div>