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A
vector is represented by a
directed line segment,
which is a segment with an
arrow at one end indicating the direction of movement.
Unlike a ray, a directed line segment has a specific length.
The
direction
is indicated by an arrow pointing from the
tail
(the initial point) to the
head
(the terminal point). If the tail is at point A
and the head is at point B, the vector from
A to B is written as: Reference

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