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“课本的作业题中有这样一道题:把一张顶角为36°的等腰三角形纸片剪两刀,分成3张小纸片,使每张小纸片都是等腰三角形,你能办到吗?请画示意图说明剪法.我们有多少种剪法,图1是其中的一种方法:定义:如果两条线段将一个三角形分成3个等腰三角形,我们把这两条线段叫做这个三角形的三分线.(1)请你在图2中用两种不同的方法画出顶角为45°的等腰三角形的三分线,并标注每个等腰三角形顶角的度数;(若两种方
”Textbook operation title has such a problem: the top angle of 36 ° isosceles triangle cut two knives, divided into three small pieces of paper, so that each piece of paper is an isosceles triangle, you Can you do it? Please draw a sketch to explain the scissors method. How many scissors methods we have, Figure 1 is one of the ways: Definition: If two lines divides a triangle into three isosceles triangles, (1) Please draw the three-point line of the isosceles triangle with apex angle of 45 ° in two different ways in Figure 2 and mark the angle of each apex angle of the isosceles triangle ; (If the two parties