论文部分内容阅读
在学习“直线与方程”知识模块时,求三角形内角平分线所在直线方程历来是一个知识难点,尤其对数据处理能力要求较高。穷则思变,基于这种情况,我们想办法多角度进行思考,尝试产生问题解决的多种方法,然后在若干方法中进行筛选,力求找到解决此类问题的简单方法以提升学生对问题的认识从而能够又快又好地解决问题。我们就以一道常见的角平分线求解问题为例尝试进行方法的探究。问题:在△ABC中,已知A(3,3),B(2,-2),C(-7,1),∠A的平分线交BC边于点D,求AD所在直线的方程。
When studying the knowledge module of “Straight Line and Equation”, finding the straight line equation of the triangle inside angle bisector has always been a difficult point in knowledge, especially for the data processing ability. In the light of this, we think of ways to think in multiple ways, try various ways of problem solving, and then screen in several ways, trying to find simple ways to solve such problems so as to enhance students’ Understand to be able to solve the problem quickly and well. We will use a common corner bisector to solve the problem as an example to try to explore the method. Problem: In △ ABC, we know that the bisector of A (3,3), B (2, -2), C (-7,1) .