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等腰三角形顶角是50度,每个底角是多少度?就一个条件该怎么求呢?别着急啊!其实题目里还有两个隐含的条件需要你好好理解:一,三角形的内角和是180度;二,等腰三角形两条腰相等,两个底角也是相等的。哦,我明白了!内角和-顶角的度数=两个底角的度数,再除以2就得到一个底角的度数了。再加上原题的一个条件,就不难列出算式:(180-50)÷2=65(度)。是的,要解决三角形的问题,就要掌握好三角形的各种特性。你能说说三角形有哪些特性吗?
The isosceles triangle angle is 50 degrees, how many degrees are each corner? On how to seek a condition? Do not worry! In fact, there are two hidden conditions require you to understand: First, the angle of the triangle And is 180 degrees; Second, isosceles triangle two waist equal, two bottom corners are equal. Oh, I see! The angle of the interior - the degree of the top corner = the degree of the bottom corner, divided by 2 to get the degree of the bottom corner. Coupled with the original title of a condition, it is not difficult to formulate the formula: (180-50) ÷ 2 = 65 (degrees). Yes, to solve the problem of the triangle, we must grasp the various characteristics of the triangle. What can you tell about triangles?