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The letter C. In vocal music, High C, sometimes known by the term Soprano C or C6 is the C two octaves above Middle C. In many fonts the letter has rotational symmetry along the horizontal axis, thus even when the character is written upside down it can be read the same.

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The majascule (uppercase; capital) letter I also has rotational symmetry about the horizontal axis (and vertical axis), so location -- high, low, or wherever -- it is read the same.

Edited by Dej Mar
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Solved by kac_cotu

NOON upside down is NOON

and we can have high NOON

upside down it's still NOON

if you write them(SWIMS,MOW,NOON) on a piece of paper and turn it upside down it should still read the same

nice job.!

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The symmetry sought was 180 degree rotational symmetry and not reflective symmetry.

NOON indeed may be considered upside down.

The majuscule of English alphabetic letters that can have reflective symmetry are:

B,C,D,E,H,I,K,O and (M <-> W).

The majuscule of English alphabetic letters that can have 180 degree rotational symmetry are:

H,I,O,N,S,Z and (M <-> W).

Edited by Dej Mar
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