画线段AB,在AB的延长线上取一点C,使BC=2AB.
画线段AB,在AB的延长线上取一点C,使BC=2AB.
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.
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,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=6cm,在AB上取一点P,使AP=BP,在AB的延长线上取一点C,使AC=3BC,在线段BA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.
画线段AB=6cm,在AB上取一点P,使AP=BP,在AB的延长线上取一点C,使AC=3BC,在线段BA延长线
画线段4B等于4cm,在线段AB上取一点k,使AK=BK,在线段AB的延长线上取一点C,使BC=二分之一AB,在线段AB
已知线段AB,在AB的延长线上取一点C,使BC=3AB,在线段AC上画线段CD,使CD=AB,若AD=60厘米,求BD之
画线段a b ,在a b的延长线上取一点c,使b,c=2ab,再在ba的延长线上取一点d,使da=ab,(接下面)