题目

如图,在▱ABCD中,∠BAD和∠BCD的平分线AF,CE分别与对角线BD交于点F,E.求证:四边形AFCE是平行四边形. 答案：【答案】详见解析．【解析】先根据平行四边形的对边平行且相等，得到AD∥BC，∠DAB=∠BCD，然后根据ASA证明△DEB≌△BFC，得到AE=CF，然后根据三角形的外角可得∠5=∠6，根据内错角相等，两直线平行，得到AE∥CF，再根据一组对边平行且相等的四边形是平行四边形，得证结论.∵四边形ABCD是平行四边形∴Ⅲ. 同义句转换。【1】I don’t think English is as useful as Chinese.I think English is ________ _________ than Chinese.【2】His coat isn’t the same as his brother’s.His coat is _________ _________ his brother’s.【3】They often chat with each other when they have lunch.They often chat with each other ________ _________.【4】What’s the meaning of this word?What ________ this word _________?【5】Tommy picked fewer apples than any other boy.Of all the boys, Tommy picked ________ _________ ________.