根据“新大纲9(B)”编写的教科书 ,对传统的立体几何内容进行了重大改革 ,特别是引进了向量工具改造传统立体几何的教学。它既对传统立体几何进行了改革 ,汲取了其精华 ,又使用了向量代数方法解决立体几何问题 ,顺应了几何改革代数化的方向。对大多数中学数学老师来说 ,这是一 According to the textbook “New Outline 9(B)”, the traditional three-dimensional geometric content has undergone major reforms, especially the introduction of vector tools to transform traditional three-dimensional geometry teaching. It not only reformed the traditional three-dimensional geometry, drew the essence of it, but also used the vector algebra method to solve the three-dimensional geometry problem, and conformed to the direction of the geometric reformation. For most middle school math teachers, this is a