画线段AB,在AB的延长线上取一点C,BC=二分之一AB,再在BA的延长线上取一点D,使DA=2AB,取AB的中点,若D
画线段AB,在AB的延长线上取一点C,BC=二分之一AB,再在BA的延长线上取一点D,使DA=2AB,取AB的中点,若D
画线段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中点E,若DE=6
画线段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中点E,若DE=6
画线段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;再在AB中取一点E,且DE
画线段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.
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
画线段AB,在AB的延长线上取一点C,使BC=2AB.
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