2D

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2-Dimensional space (commonly abbreviated as 2D) is any space with 2 axis points of reference. The most common axis are X (left-and-right) and Y (up-and-down). Any other direction in 2D space can be seen as a combinational movement along these two axes (i.e. a horizontal movement/line is really just +/-X and +/-Y).



Slope

A line within 2D space has a slope (M), defined by

     Y2 - Y1
M = _________
     X2 - X1



External Links

See Also

3D