FileFormat.info: Unicode Character 'Square Root' (U+221A) Unicode.org: Mathematical Operators; Decodeunicode.org: U +221 A Square Root; Unicode.org: Unicode Nearly Plain-Text Encoding of ...

The square root symbol. After several students made comments along those lines, another student said something the sheriff’s office said could have sounded like a threat out of context.

Police were reportedly called after students at a Louisiana high school mistook the square root symbol for a gun drawing. On Tuesday, at Oberlin High School, a student had been completing a math ...