Adding 2 Vectors: Geometric Vector Addition

① This GeoGebra example dynamically demonstrates the geometric addition of two vectors, visually illustrating the triangle law or parallelogram law of vector addition. ② The core mathematical concept is vector addition, involving vector magnitudes, direction angles, and the resultant vector. ③ Construction highlights: The Vector command is used to create vectors, with objects Angle_A, Length_A, Angle_B, Length_B controlling the direction and magnitude of the two input vectors. Points A, B, C, D, A_1, B_1 are constructed to form the resultant vector. ④ Suitable for high school or early college students learning vector basics, and for teachers to demonstrate the geometric meaning of vector addition in class, helping students grasp the intuitive nature of vector operations.