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,E是DB中点,且EB=3
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
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,E是DB中点,且EB=3
已知线段AB,在AB延长线上取一点C,使BC=3AB.在BA延长线上取一点D,使DA=3/2AB,E是DB中点且EB=3
已知线段AB的延长线上有一点C,且BC=3AB,在BA的延长线上取一点D,使DA=3/2AB,点E是DB的中点,若EB=
已知线段AB,AB的延长线上取一点C,使BC=2AB,在BA的延长线上取一点D,使DA=2分之3AB,E是DB的中点=3
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=3分之2,E是DB的中点...
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,延长线上取C,使BC=3AB,在AB延长线上取一点D,使AD=1.5AB,E为DB中点,且EB=30cm,
已知线段AB,在线段AB的延长线取一点c,使BC=3AB,在BA的延长线上取一点D,使DA=3/2AB,E是BD的中点