The Letter 'X' Stands for the Unknown, the Mysterious, and the Intangible. Why? - Atlas Obscura

From Twitter's rebranding to The X-Files to algebra, this single letter has an uncommon amount ofX factor. A historian of mathematics gets to the root of it.

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X Shape Vector Art, Icons, and Graphics for Free Download

5,800+ Letter X Logo Stock Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock

The psychological meaning of shapes in logo design [Infographic]

TREND enterprises, Inc. Basic Shapes Learning Chart, 17 x 22 : Office Products

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