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Who was the first to discover that a triangular hypothetical 3D structure can be constructed which can never be visualized? a)this is credited to oscar ruibuilden. b)this is credited to roger penrose. c)this is credited to pockermann finkelstein. d) this is credited to oscar reutersvard. ALSO TRY TO ANSWER THIS QUESTION:::::::: who has made this triangle or tribar popularized?? a)oscar reutersvard. b)roger borodine. c)roger penrose. d)oscar ruibilden

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