见图[1],角BCD=90°,角ABC=60°,AD平分角BAC,CE平分角BCA,证明:EF=CD见图[2],角ABC=60°,AD平分角BAC,CE平分角BCA,证明:EF=CD见图[3],角CBA=90°,B,A,D共线,三角形ABC和三角形ADE全等,BF平分角CBA,角BFD=90°,问:CE,BF
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/09 22:52:19
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