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Hexadecimal (also known as base-16 or simply hex) is a positional numeral system that represents numbers using a radix (base) of sixteen. Unlike the decimal system representing numbers using ten symbols, hexadecimal uses sixteen distinct symbols, most often the symbols "0"–"9" to represent values 0 to 9 and "A"–"F" to represent values from ten to fifteen.
Hex, a hexagonal tile of a hex map, used in war and strategy board games; Hex (board game), a mathematical strategy game played on a hexagonal grid or rhombus Hex (climbing), an item of rock climbing equipment used to arrest a fall
Numerical prefixes occur in 19th-, 20th-, and 21st-century coinages, mainly the terms that are used in relation to or that are the names of technological innovations, such as hexadecimal and bicycle. Also used in medals that commemorate an anniversary, such as sesquicentennial (150 years), centennial (100 years), or bicentennial (200 years).
The prefix "hex-" originates from the Greek word "hex," meaning six, while "sex-" comes from the Latin "sex," also signifying six. Some linguists and mathematicians argue that since many English mathematical terms derive from Latin, the use of "sexagon" would align with this tradition.
3. Between two groups, may mean that the first one is a proper subgroup of the second one. > (greater-than sign) 1. Strict inequality between two numbers; means and is read as "greater than". 2. Commonly used for denoting any strict order. 3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1.
A cap screw with a socket head (usually implying a hex socket, driven with a hex key. SHN: shown: See Part number > Symmetrical parts for explanation. SHSS: socket head set screw: A set screw with a socket head (usually implying a hex socket, driven with a hex key. SI: Système international [d'unités] [International System of Units]
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The term hex with occult connotations may derive from the Pennsylvania German word "hex" (German Hexe, Dutch heks), meaning "witch". However, the term "hex sign" was not used until the 20th century, after 1924 when Wallace Nutting's book Pennsylvania Beautiful was published. [8]