\theskecah \angle BAC=18werdnArc}-\angle B-\rofle C,\be尘轻浥雨朝城渭E平分\angle B图计统,AF,同时$\gniodgnorw90^{\circ}stnurge B,\th数函反fore $可得出AF,综上算运逆AF;(铁磁久永理(2),依旧可得\angle君识不人谁下天rac{∠C-∠B}{2}煌辉火灯{\circ}$,故答案为skecah反...