如图1图2 Abc是等边三角形de分别是abbc边上的两个动点始终保持bd=ce．1当点de运动到如图1所示的位置时求证 Sketch Coloring Page

如图1图2 Abc是等边三角形de分别是abbc边上的两个动点始终保持bd=ce．1当点de运动到如图1所示的位置时求证 Template

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sketch #5059 Edward Hopper&#;s &#;Nighthawks&#; by Rosanne Zammit

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sketch #5059 Edward Hopper&#;s &#;Nighthawks&#; by Rosanne Zammit

sketch #4362 cow

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anonymous
sketch #4362 cow

sketch #970 Depression

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anonymous
sketch #970 Depression

sketch #3974 Bird Skerch w/ vibration

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anonymous
sketch #3974 Bird Skerch w/ vibration

sketch #314 Butterfly

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sketch #314 Butterfly

sketch #3448 Treba mi bolji

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sketch #3448 Treba mi bolji "mish " ;)

sketch #4700

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sketch #4700

sketch #5062

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sketch #5062

sketch #4934 Nami-Ki Roberto Castro Colimil

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sketch #4934 Nami-Ki Roberto Castro Colimil

sketch #5199 Catface by Noeli Racioppo

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sketch #5199 Catface by Noeli Racioppo

sketch #3236 Sunset by Aaron Bahary

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sketch #3236 Sunset by Aaron Bahary

sketch #5125

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sketch #5125

sketch #3290 Calvin and Hobbes by অনন্ত জলিল

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sketch #3290 Calvin and Hobbes by অনন্ত জলিল

sketch #3659 Portrait by Mari Falcsik

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sketch #3659 Portrait by Mari Falcsik

sketch #2278 flower

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sketch #2278 flower

sketch #3459 BLUE from fosters imagenary friends

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sketch #3459 BLUE from fosters imagenary friends

sketch #5039

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sketch #5039

sketch #334 DON 'T!

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sketch #334 DON 'T!

sketch #5070 The Rolling Stones by Roby Krdoso

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sketch #5070 The Rolling Stones by Roby Krdoso

sketch #5250

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sketch #5250

sketch #4546 Misaki Mei by Wanis Khelifa

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sketch #4546 Misaki Mei by Wanis Khelifa

sketch #3259

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sketch #3259

sketch #25 Suzzy the stegosaurus

Rachel Roe
sketch #25 Suzzy the stegosaurus

sketch #5215

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sketch #5215

sketch #1463

Laura Agapi Asnicar
sketch #1463

sketch #1328

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sketch #1328

sketch #2910 Harley Quinn Germaine Hoens

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sketch #2910 Harley Quinn Germaine Hoens

sketch #5349

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sketch #5349

sketch #3032 Batman by Aaron Bahary

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sketch #3032 Batman by Aaron Bahary

sketch #1385 fingerschpitsengeful

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sketch #1385 fingerschpitsengeful

tomski如图1图2 abc是等边三角形de分别是abbc边上的两个动点始终保持bd=ce．1当点de运动到如图1所示的位置时求证 coloring

如图， ABC是等边三角形，D是BC边上一点，且满足∠ADE=60∘，DE交等边三角形ABC的外角平分线CE所在直线于点E，试探究AD与DE的 sketch template

如图1已知 ABC是等边三角形DE分别是ABBC上的点且BD=CEAECD交于点F．1求证 ACE≌ CBD2过A作 sketch template

12．如图已知 ABC是等边三角形点DE分别在BCAC上且BD＝CEAD与BE相交于点F1试说明 ABD≌ BCE2 sketch template

题目如图1 ABC为等边三角形点EF分别在BC和AB上且CE=BFAE与CF相交于点H1求证 ACE≌ CBF2求 sketch template

如图，已知 ABC是等边三角形，延长BA至E，延长BC至D，使AE=BD，求证：EC=ED．百度教育 sketch template

如图1在等边 ABC的边AC的延长线上取一点E以CE为边作等边 CDE使它与 ABC位于直线AE的同侧．1同学们对图1进行了热烈的 sketch template

百度教育 sketch template

如图所示在等边 ABC中点DE分别在边BCAB上且BD=AEAD与CE交于点F则∠DFC的度数为 A．60°B．45°C sketch template

从一道简单的高数题谈起——点到三角形边及顶点的距离问题知乎 sketch template

（1）问题�现：如图1， ABC和 ADE都是等边三角形，连接BD，CE．易知=．（2）类比探究如图2， ADE都是直角三角形，∠ sketch template

如图 ABC为等边三角形以边BC为直径的半圆与边ABAC分别交于DF两点过点D作DE⊥AC垂足为点E．1判断DE与⊙O的位置 sketch template

已知等边三角形ABC的边长为5点P在线段AB上点D在线段BC上且 PDE是等边三角形．1初步尝试若点P与点A重合时BD BE sketch template

如图 ABC是等边三角形D是AC的中点F是边AB上的动点E为直线BC上一点且∠EDF=120°．�如图1求证DF=DE�如图2 sketch template

如图等腰 ABC中AC=BC BDC和 ACE分别为等边三角形AE与BD相交于点F连接CF并延长交AB于点G．求证G为AB的中点 sketch template

如图等边三角形ABC的边长为6A、B、A1三点在一条直线上且 ABC≌ A1BC1若D为线段BC1上一动点则AD CD的最小值是 sketch template

如图， ABC是等边三角形，它的面积为1，延长BC至D，使BD=2BC，延长CA至E，使CE=3CA，延长AB至F，使AF=4AB，求 DEF sketch template

题目已知如图 ABC和 CDE均为等边三角形BCD三点在同一条直线上连接线段BEAD交于点F连接CF1求证∠FBC sketch template

如图D是等边三角形ABC外一点若BD=8CD=6连接AD则AD的最大值与最小值的差为 12 百度教育 sketch template

如图已知在 ABC中AD是BC边上的中线E是AD上一点且BE=AC延长BE交AC于点F。求证AF=EF。百度教育 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

如图，在等边三角形ABC的三边上，分别取点D，E，F，使得 DEF为等边三角形，求证：AD＝BE＝CF．——青夏教育精英家教�—— sketch template

如图1Rt ABC中∠C=90°按题目所给条件及要求将相应的直角三角形分割成若干个全等的并且分别与原三角形相似的三角形．画出图形并简要 sketch template

百度教育 sketch template

题目1如图1在四边形ABCD中FE分别是BCAD的中点连结EF并延长分别与BACD的延长线交于点MN则∠BME=∠ sketch template

百度教育 sketch template

题目如图Rt ABC中∠BAC=90°AB=3AC=6点DE分别是边BCAC上的动点则DA DE的最小值为．题目和参考 sketch template

百度教育 sketch template

定理证明 30°所对直角边等于斜边的一半知乎 sketch template

如图 ABC和 CDE都是等边三角形且点BCD在同一条直线上BE交AC于FAD交CE于H连接FH．1求证 ACD≌ BCE sketch template

如图O是等边 ABC内一点OA=3OB=4OC=5将线段BO绕点B逆时针旋转60°得到线段BO′．1求点O与O′的距离2 sketch template

百度教育 sketch template

如图在Rt ABC中∠ACB=90°CD⊥AB于D设AC=bBC=aCD=hAB=c下面有3个�题11a2 1b2 sketch template

如图在等边 ABC中D是AC的中点延长BC到点E使CE=CDAB=10cm．1求BE的长2 BDE是什么三角形为什么 sketch template

题目如图在四边形ABCD中AB∥CDAB＝CD∠A＝∠ADCEF分别为ADCD的中点连接BEBF延长BE交CD的延长线 sketch template

如图等边 ABC其边长为1D是BC中点点EF分别位于ABAC边上且∠EDF=120°．1直接写出DE与DF的数量关系2 sketch template

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