Hash mark
From Wikipedia, the free encyclopedia
- For other meanings, see Hash#Hash mark.
A hash mark in mathematics (sometimes called a tick mark) is a short line perpendicular to an axis in analytic geometry. These marks are evenly spaced along each axis, and indicate distance from the origin. To be meaningful, these marks need to be labeled with real numbers, typically 1, 2, 3 to the right and up, -1, -2, -3 to the left and down. But each hash mark may represent ten units or a million units, and so the marks are meaningless unless they have labels, something many calculator graphs omit.