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点B在直线_____上,点D在直线的_____外;直线_____与直线______相交于点A,点D是直线______与直

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点B在直线_____上,点D在直线的_____外;直线_____与直线______相交于点A,点D是直线______与直线______的交点,也是直线_______与直线_______的交点,又是直线_______与直线______的交点;经过点B有_______条直线,分别是________.
点B在直线_____上,点D在直线的_____外;直线_____与直线______相交于点A,点D是直线______与直
点B在直线__AC___上,点D在直线的__AC___外;直线__AC___与直线___AD___相交于点A,点D是直线__AD____与直线___CD___的交点,也是直线___AD____与直线__BD_____的交点,又是直线__BD_____与直线__CD____的交点;经过点B有___2____条直线,分别是__AC.BD______.