1本单元知识网络向量及其运算向量向量的定义用有向线段表示向量四个重要的定义(零向量、单位向量、相等向量、共线向量)向量的加法与减法向量的加法向量的减法实数与向量的积实数与向量的积共线向量的充要条件平面向量的基本定理平面向量的数量积及其运算律平面向量数量积的定 1 The definition of this unit’s knowledge network vector and its operation vector vector is represented by directed lines. Four important definitions (zero vector, unit vector, equal vector, collinear vector) Addition of vector and Subtraction vector of subtraction vector. Subtraction real number The necessary and sufficient conditions of the product of the vector and the product of the collinear vector of the vector The fundamental theorem of the plane vector The product of the number of the plane vector and the number product of the plane vector of the operation law