represents a point:tip of a ballpen,tip of a needle,corner of a table
represents a line:edge of a table intersection of the front wall,side wall and ceiling,intersection of the front wall and ceiling,electric wire,sun rays
represents a plane:blackboard,wall,paper,surface of a table
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Answer:
represents a point:tip of a ballpen,tip of a needle,corner of a table
represents a line:edge of a table intersection of the front wall,side wall and ceiling,intersection of the front wall and ceiling,electric wire,sun rays
represents a plane:blackboard,wall,paper,surface of a table