Hatch marks
From FIS Freestyle wiki
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.
[edit] Also see
- Hash marks
- Cross-hatching
- Outside line
- Inside line
- Coloring the Course and Features
- Painting the Jumps
- Sprayer
- Visibility
[edit] Reference
- Wikipedia see Hatch marks [1]
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