如图,△ABC中,CA=CB,CD,CE分别是角ACB记外角的平分线,AE⊥CE,垂直足为E.在三角形ABC中,CA=CB,CD,CE分别是角ACB及其外角嘚平分线,AE⊥CE,垂足为E,求证,四边形ADCE媞矩形
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如图,△ABC中,CA=CB,CD,CE分别是角ACB记外角的平分线,AE⊥CE,垂直足为E.在三角形ABC中,CA=CB,CD,CE分别是角ACB及其外角嘚平分线,AE⊥CE,垂足为E,求证,四边形ADCE媞矩形
如图,△ABC中,CA=CB,CD,CE分别是角ACB记外角的平分线,AE⊥CE,垂直足为E.
在三角形ABC中,CA=CB,CD,CE分别是角ACB及其外角嘚平分线,AE⊥CE,垂足为E,求证,四边形ADCE媞矩形
如图,△ABC中,CA=CB,CD,CE分别是角ACB记外角的平分线,AE⊥CE,垂直足为E.在三角形ABC中,CA=CB,CD,CE分别是角ACB及其外角嘚平分线,AE⊥CE,垂足为E,求证,四边形ADCE媞矩形
提示:
证3个角为直角即可
∠ADC三线合一
∠E 垂直
∠DCE邻补角平分线
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