1. You can use a ________ ________ ________ to represent a quantity that involves both magnitude and direction.
2. The directed line segment PQ \ has ________ point P and ________ point Q.
3. The set of all directed line segments that are equivalent to a given directed line segment PQ \ is a ________ v in the plane.
4. Two vectors are equivalent when they have the same ________ and the same ________.
5. The directed line segment whose initial point is the origin is in ________ ________.
6. A vector that has a magnitude of 1 is a ________ ________.
7. The two basic vector operations are scalar ________ and vector ________.
8. The vector sum v1i + v2 j is a ________ ________ of the vectors i and j, and the scalars v1 and v2 are the ________ and ________ components of v, respectively.