12重本点单、元难知点识、热网点络分析重点:平面的基本性质(三个公理和三个推论)及其应用;空间两直线的位置关系;直线与平面平行的判定定理和性质定理的应用;直线和平面垂直的判定定理、三垂线定理及其逆定理的应用;空间角(异面直线所成角、线面角、二面角)、空间距离(点线距 12 focuses on single-point, point-in-knowledge, point-of-entry network analysis points: the basic nature of the plane (three axioms and three inferences) and their applications; the positional relationship of two lines in space; the decision theorem for parallel lines and planes The application of the property theorem; the application of the theorem of vertical and horizontal vertices, the application of the triple vertical theorem and its inverse theorem; the spatial angle (angles formed by different straight lines, line surface angles, dihedral angles), spatial distance (point line spacing)