已知线段AB,如图所示在AB的延长线上取一点C,使BC=AB,在AB的反向延长线上取一点D,使DA=1/2AB,点E为B
已知线段ab,在ab的延长线上取一点c,使bc=ab,再在ab的反向延长线上取一点d,使da=2ab,线段db等于线段b
已知线段ab,在ab的延长线上取一点c点c,使ac=2bc,在ab的反向延长线上取一点d,使da=2ab,那么线段AC是
已知线段AB,在AB的延长线上取一点C,使BC=2AB在AB的反向延长线上取一点D,使DA=2AB,使DA=2AB,那么
已知线段AB,在AB的延长线上取一点C,使BC=AB,在BA的延长线上取一点D,使DA=2AB.
已知线段AB,在AB的延长线上取一点C,使AC=2BC,在AB的反向延长线上取一点D,使DA=2AB,那么线段AC是线段
已知线段AB,在AB的延长线上取一点C,使BC=2AB,再在AB的反向延长线上取一点D,使DA=2AB,
已知AB,在AB的延长线上取一点C,使AC=2BC,在AB的反向延长线上取一点D,使DA=2AB,那么线段AC是线段DB
已知线段AB,在AB的延长线上取一点C,使BC=2AB,再在BA的延长线上取一点D,使DA=AB,取AB的中点E,
已知线段AB,在AB的延长线上取一点C,BC=2AB,再在BA的延长线上取一点D,使DA=AB,取AB中点E,使DE等于
已知线段AB,在AB的延长线上取一点C,使BC=3AB,在BA的延长线上取一点D,使DA=32
已知线段AB,在AB的延长线上取一点C,使AC=2BC,在AB的反向延长线上取一点D,使AD=2AB,则线段CD是线段B
已知线段AB,在AB的延长线上取一点C,使BC=3AB,在BA的延长线上取一点D,使DA=2AB,E是DB的中点,且EB