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构成三角形的基本要素是边和角,那么尺规作三角形实际上就是尺规作线段和尺规作角的一个综合,用数学思想方法解释尺规作三角形,就是用转化的思想方法转化为学生学过的五种基本作图当中的前两种作图的综合应用。利用没有刻度的直尺和圆规的作图叫尺规作图。五个基本作图是指:(1)作一条线段等于已知线段;(2)作一个角等于已知角;(3)作一个角的角平分线;(4)作一条线段的垂直平分线;(5)过一点作已知直线
The basic elements of the formation of the triangle is the edge and angle, then the rule for the triangle is actually a ruler for line segment and ruler angle for a synthesis, using mathematical thinking method to interpret ruler for the triangle, that is, using the transformation of thinking into students Learn the five basic mapping among the first two kinds of integrated application. Drawings are made using ruler and compasses without scales. The five basic plots are: (1) make a line segment equal to a known line segment; (2) make an angle equal to a known angle; (3) make an angle bisector; and (4) Line; (5) A little known as a straight line