We can do this by subtracting the coordinates of two pairs of points. Let's use the points (0, 1, 1), (1, 0, 1), and (1, 1, 0). We can form two vectors, **AB** and **AC**, where **A**=(0, 1, 1), **B**=(1, 0, 1), and **C**=(1, 1, 0).
Vector **AB** = **B** - **A**
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