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Animation of a half-turn ambigram of the word ambigram, with 180-degree rotational symmetry [1]. An ambigram is a calligraphic composition of glyphs (letters, numbers, symbols or other shapes) that can yield different meanings depending on the orientation of observation.
John Langdon (born April 19, 1946) is an American graphic designer, ambigram artist, painter, and writer. [1] [2] Langdon has been a freelance artist specializing in logos, type, and lettering since 1977. [3] [4] [1] He retired from teaching in Drexel University's graphic design program in November 2015 after 27 years of service. [5] [4]
English: Ambigram ¡OHO! and drawing of reversible male faces by Rex Whistler, 1946 (but created before since the artist was dead in 1944). 180° rotational symmetry. Title of the book: Certain Two-Faced Individuals Now Exposed By The Bodley Head.
Initially it is established that Langdon is a successful scholar who Brown named after John Langdon, [3] a professor of typography at Drexel University who is known for his creation of ambigrams. An example of Langdon's ambigrams appeared on the cover of the first edition of Brown's novel Angels & Demons , and other ambigrams featured ...
A half-turn may refer to: One half of a full turn, an angle measure equivalent to 180 degrees or π radians Considering only points in a plane, a half turn is equivalent to a point reflection; Pi (π), a mathematical constant representing a half-turn in radians; A U-turn: a driving maneuver used to reverse direction
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