Hatch Mark
Hatch marks, sometimes also called hash marks, or tick marks, are a form of mathematical notation. They are typically used three ways:
- Unit and value marks – as on a ruler or number line.
- Congruency notation – as on a geometric figure.
- Graphed points – as on a graph.
Hatch marks are frequently used as an alternate form of abbreviation for some common units of measurement. In regard to distance, a single hatch mark typically indicates feet and a double hash mark indicates inches within the English system. In regard to time, a single hatch mark indicates minutes and a double hatch mark indicates seconds; these typically occur following hours, indicated by an elevated circle. The same system is used within Geometry and Trigonometry for the measurement of angles in degrees, minutes and seconds.
Read more about Hatch Mark: Unit and Value Marks, Congruency Notation, Graphed Points
Famous quotes containing the words hatch and/or mark:
“He looked at Senator Hatch and said, “I’m going to make her cry. I’m going to sing ‘Dixie’ until she cries.” And I looked at him and said, “Senator Helms, your singing would make me cry if you sang ‘Rock of Ages’.””
—Carol Moseley-Braun (b. 1947)
“There are no such oysters, terrapin, or canvas-back ducks as there were in those days; the race is extinct. It is strange how things degenerate.... I passed, the other day, the deserted house of Mrs. Gerry, which I used to think so lordly. It stands alone now amid the surrounding sky-scrapers, and reminds me of Don Quixote going out to fight the windmills. It should always remain to mark the difference between the past and the present.”
—M. E. W. Sherwood (1826–1903)