Art of Problem Solving: Introducing the Rhombus

Art of Problem Solving's Richard Rusczyk introduces the rhombus.

[@edwardkuriakose5370]

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[@cindywang2011]

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[@diorrat..0]

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[@paresdas9764]

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[@sipdip238]

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[@jiminbang830]

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[@vegashd9008]

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[@thanvijain7379]

Thanks a LOT!!!!