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知识整合立体几何在高考中占的分量大概是20%左右,当然有时会和其他章节知识相综合,原则上不出难题,所以我们考生们应力争把立体几何部分的题目全部“拿下”.考试中常见题型有证明线线、线面、面面的平行或垂直位置关系,求解三种角,求点到平面的距离,还有一些创新型问题.解题策略用的最多的就是化归与转化思想,求角要转化,求距离要转化,平行垂直的位置关系在线线、线面、面面三者之间也经常转化,所以把握好转化就等于把握好解立体几何题的灵魂.做计算类大题务必细心再细心,保证最后得数的正确性;证明类大题务必步骤严密,要求每一步都有课本中的定理作为依据,可谓步步有据,不可跳步.
Knowledge integration stereo geometry in the college entrance examination accounted for about 20% of the weight, of course, sometimes combined with other chapters of knowledge, in principle, no problem, so we candidates are struggling to all the three-dimensional geometry of the subject “ ”.Common question types in exams are proof of parallel or vertical positional relationships between line, line, and face. Solving the three angles, finding the distance from the point to the plane, there are some innovative problems. The problem solving strategy is used most often. It is the idea of transformation and transformation. It is necessary to transform the angle and transform the distance. The positional relationship between parallel lines and vertical lines is often transformed between the line, the line surface, and the surface. So grasping the transformation is equivalent to grasping the solution to the three-dimensional geometry problem. The Soul. To do calculations, we must carefully and carefully, to ensure the correctness of the final number; Proof of the class must be strict, requires each step to have the theorem in the textbook as a basis, can be described as step by step, can not be skipped .