如图，在正三角形abc中，ab=6，d、e分别为ac、bc上的动点，知乎 Sketch Coloring Page

如图，在正三角形abc中，ab=6，d、e分别为ac、bc上的动点，知乎 Template

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anonymous

anonymous
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anonymous

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sketch #5093 Pedro Henrique Jordan Coquet

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anonymous

anonymous
sketch #5149 Daenerys Targaryen by Jorge Valero

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sketchmaster
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anonymous

anonymous
sketch #5182 Inuyasha by Sepp Herberger

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sketch #2029 GOD 'S PROMISE ...

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sketch #2029 GOD 'S PROMISE ...

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tomski如图，在正三角形abc中，ab=6，d、e分别为ac、bc上的动点，知乎 coloring

如图，在三角形ABC中，D、E、F分别是BC、CA、AB上的点，AD、BE、CF相交于一点O，这样三角形ABC被分成6个三角形，其中4个三角形 sketch template

百度教育 sketch template

题目：如图，在三角形ABC中，点D是AB的中点，∠DAC=2∠DCA，∠DCB=30度，求∠B的度数 知乎 sketch template

题目：如图，在三角形ABC中，点D是AB的中点，∠DAC=2∠DCA，∠DCB=30度，求∠B的度数 知乎 sketch template

如图，在三角形 ABC 中， D 是 BC 的中点， E 、 F AC 的三等分点。已知三角形 的面积是 108 平方厘米。求三角 sketch template

三角形“四心”有关性质及证明（内心篇） 知乎 sketch template

如图在三角形ABC中AB=ACD是BC上一点∠BAD=40°E是AC上一点AD=AE求∠EDC的度数．题目和参考答案——青夏 sketch template

如图在三角形ABC中BDDC=12E为AD的中点若三角形ABC的面积为120平方厘米则阴影部分的面积是多�平方厘米题目和参考 sketch template

4．如图所示一粒子源位于一边长为的正三角形ABC的中心O处可以在三角形所在的平面内�各个方��射出速度大小为v质量为m电荷量为q的带电 sketch template

百度教育 sketch template

如图在 ABC中分别以ABAC为边�外作等腰直角三角形ABE等腰直角三角形ACD其中∠BAE=∠CAD=90°BD与CE相交于点O sketch template

如图在三角形ABC中三角形AEO的面积是1三角形ABO的面积是2三角形BOD的面积是3则四边形DCEO的面积是多�——青夏教育精英 sketch template

如图在直角三角形ABC中放置边长分别34x的三个正方形则x的值为 ．题目和参考答案——青夏教育精英家教�—— sketch template

如图已知等边三角形ABC中内有一点PPA=3PC=4PB=5求此等边三角形ABC的边长百度知道 sketch template

在等边三角形ABC中，点D、E分别在AB、BC边上，连结CD，AE交于点P，且CD=AE，∠ BCD=20°，则∠ APD的度数为 百度教育 sketch template

如图．已知点BCD在同一条直线上． ABC和 CDE都是等边三角形BE交AC于FAD交CE于H1求证 BCE≌ ACD2 sketch template

如图在三角形ABC中BDDC=12E为AD的中点若三角形ABC的面积为120平方厘米则阴影部分的面积是多�平方厘米题目和参考 sketch template

百度教育 sketch template

如图在正三角形ABC中DEF分别为各边的中点GHIJ分别为AFADBEDE的中点．将 ABC沿DEEFDF折成三棱锥 sketch template

题目1操作如图在已知内角度数的三个三角形中请用直尺从某一顶点画一条线段把原三角形分割成两个等腰三角形并在图中标注相应的角的 sketch template

如图等腰三角形ABC中AB=AC顶角∠A=20°在边AB上取一点D使AD=BC求∠BDC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BDCE分别为三角形的两条高交于点O �问图11中有个三角形与相似它们是 �连结DE ADE与 ABC是否相似 sketch template

如图在三角形ABC中D点为AB的中点E点为BC的中点F点为BE的中点已知三角形DCF面积为63平方厘米则三角形ABC面积为多�平方 sketch template

题目如图图1图2图3 图n分别是⊙O的内接正三角形ABC正四边形ABCD正五边形ABCDE 正n边形ABCD 点MN sketch template

如图C为线段AE上一动点在AE同侧分别作正三角形ABC和正三角形CDEAD与BE交于点OAD与BC交于点P BE与CD交于点Q连结 sketch template

如图在三角形纸片ABC中AB=6BC=8AC=4．沿虚线剪下的涂色部分的三角形与 ABC相似的是ABCD 题目和参考答案——青 sketch template

如图等边三角形ABC中AB=5延长BC至点P使CP=3将 ABC绕点B顺时针旋转a角得到 DBE连接DPEP则当 DPE为 sketch template

如图所示，已知边长为4的正三角形ABC中，E，F分别为BC和AC的中点，PA=2，且PA⊥平面ABC，设Q是CE的中点（1）求证：AE∥平面 sketch template

百度教育 sketch template

$如图所示正三角形ABC的边长为2$frac{AE}{BE}$=2$frac{AD}{DC}$=$frac{1}{2}$BD交CE sketch template$

如图，Rt ABC中，∠C＝90°，AC＝BC，点D、E分别是边AB、AC上的点，把 ADE沿DE折叠，点A恰好落在BC上的点F处，若点F为 sketch template

如图在正三角形ABC中DEF分别为各边的中点GHIJ分别为AFADBEDE的中点．将 ABC沿DEEFDF折成三棱锥 sketch template

如图正三角形ABC内接于⊙OP是劣弧BC上的任意一点若PA=2则四边形ABPC的面积为 ．题目和参考答案——青夏教育精英家教�—— sketch template

在三角形ABC中如果A点的位置用数对表示为45B点的位置用数对表示为42C点的位置用数对表示为32那么三角形ABC sketch template

如图三角形ABC在正方形�格中图中每个小正方形的边长均为1个单位长度若点A的坐标为03点B的坐标为按要求解下列问题1在 sketch template

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