### 11.7.4 Vectors in the plane: segment vector

See section 12.5.4 for vectors in space.

The segment and vector commands return and draw vectors. (The segment command can also draw line segments, see section 11.7.3.)

segment takes as arguments a point and a vector. The point indicates the beginning of the result and the vector (given as a list of coordinates) the direction.

segment returns and draws the corresponding vector as a line segment. If the arguments are P and V, then command draws the segment from P to P+V.
Input:

segment([-1,0],[1,1])

Output:

vector takes as arguments two points (or a list with two points) or a point and a vector.

vector returns and draws the corresponding vector. If the arguments are two points, the vector goes from the first to the second point; if the arguments are a point and a vector, then the vector starts at the given point.
Input:

vector([-1,0],[1,i])

or:

vector(-1,i)

or:

V := vector(1,2+i):; vector(-1,V)

Output: