Mathematics
Senior High
教えてください
⑨ 線分 BE と線分CD との交点を点
更に点B と上京C、点D と点選と大
AEDニテンACB一90” 、辺の長きが
AE一18、BOCニ12、DE=8 衝
であるときの辺 AO の長さを求める計
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