已知一个等腰三角形的顶角为x度，腰长为l，怎么用与x相关的三角函数以及l来表示该等腰三角形的底边长？ 知乎 Sketch Coloring Page

已知一个等腰三角形的顶角为x度，腰长为l，怎么用与x相关的三角函数以及l来表示该等腰三角形的底边长？ 知乎 Template

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tomski已知一个等腰三角形的顶角为x度，腰长为l，怎么用与x相关的三角函数以及l来表示该等腰三角形的底边长？ 知乎 coloring

已知一个等腰三角形的顶角为x度，腰长为l，怎么用与x相关的三角函数以及l来表示该等腰三角形的底边长？ 知乎 sketch template

最全的三角函数精确值推导 知乎 sketch template

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数学课上同学们探究�现如图1顶角为36°的等腰三角形具有一种特性即经过它某一顶点的一条直线可把它分成两个小等腰三角形 并且对其进行了 sketch template

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已知等腰三角形一腰上的高与另一腰的夹角为50∘，则等腰三角形的顶角度数为 百度教育 sketch template

定义如果两条线段将一个三角形分成3个等腰三角形�们把这两条线段叫做这个三角形的三分线．请你在图中用两种不同的方法画出顶角为45°的等腰三角 sketch template

已知：在三角形ABC中，AB=AC角BAC=20度，D点在AB上且AD=BC求角ACD的度数 知乎 sketch template

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顶角为36°的等腰三角形称为黄�三角形如图 ABC BCD DEC都是黄�三角形己知AB=2cm则DE= Cm．题目和参考答案 sketch template

�们知道含有36°的等腰三角形是特殊的三角形通常把有一个内角等于36°的三角形称为“黄�三角形 ．1如图12在 ABC中已知 sketch template

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题目定义如果一条线段将一个三角形分成2个小等腰三角形�们把这条线段叫做这个三角形的“好线如果两条线段将一个三角形分成3个小等腰三角 sketch template

已知一个等腰三角形的腰长为8cm腰上的高为4cm求这个三角形各角的度数．题目和参考答案——青夏教育精英家教�—— sketch template

如图在 ABC中AB=AC∠A=36°请你设计三种不同的方法将 ABC分割成三个等腰三角形不要求写出画法不要求证明但是要标出所 sketch template

全等三角形的10个模型 知乎 sketch template

15．如图所示已知等腰直角三角形ABC中∠ACB=90°直线L经过点C AD ⊥LBE⊥L垂足分别为DE． 1证明 ACD sketch template

已知等腰三角形的腰长为6面积为93那么顶角的度数为 ．题目和参考答案——青夏教育精英家教�—— sketch template

已知等腰三角形的�长为24一腰上的中线把三角形分为两个三角形两个三角形的�长的差是3cm求等腰三角形各边的长．题目和参考答案——青夏 sketch template

19．一个正方形和一个等腰三角形有相等的�长已知等腰三角形有两边长分别为56cm和132cm则这个正方形的面积为 A．64cm2 sketch template

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下面是“已知底边及底边上的高线作等腰三角形 的尺规作图过程．已知线段a．求作等腰 ABC使AB=ACBC=aBC边上的高为2a．作法 sketch template

已知一个直角三角形两直角边之和为20cm则这个直角三角形的最大面积为 A．25cm2B．50cm2C．100cm2D．不确定——青夏教育 sketch template

已知：在三角形ABC中，AB=AC角BAC=20度，D点在AB上且AD=BC求角ACD的度数 知乎 sketch template

已知一个等腰三角形的顶角为46°则它腰上的高与底边所成的角等于 A23°B44°C46°D67° 题目和参考答案——青夏教育 sketch template

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