平面几何入门教学通常是指平面几何的基本概念、相交线和平行线以及三角形这三部分内容的教学。要搞好平面几何的入门教学,关键是解决好以下几个问题。一、抓住公理,培养适当的逻辑推理,训练思维能力教学大纲要求:“通过各种图形的概念、性质、作(画)图及运算等方面的教学,发展学生的逻辑思维能力、空间能力和运算能 Introduction to Plane Geometry Teaching usually refers to the basic concepts of plane geometry, intersecting lines and parallel lines, and teaching of these three parts of the triangle. To improve the introduction of plane geometry teaching, the key is to solve the following problems. First, to seize the axioms, to develop appropriate logical reasoning, training thinking ability syllabus requirements: ”Through a variety of graphics concepts, nature, making (drawing) and computing aspects of teaching, the development of students’ logical thinking ability, space Ability and computing power