Applet: The standard unit vectors in two dimensions
The standard unit vectors in two dimensions, $\vc{i}$ (green) and $\vc{j}$ (blue), are length one vectors that point parallel to the $x$-axis and $y$-axis, respectively. Moving them with the mouse doesn't change the vectors, as they always point toward the positive direction of their respective axis.
Applet file: standard_unit_vectors_2d.ggb
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