如图已知d是 abc的bc边的中点de⊥acdf⊥ab垂足分别为ef且df=de则 abc是等腰三角形吗请说明理由．——青夏 Sketch Coloring Page

如图已知d是 abc的bc边的中点de⊥acdf⊥ab垂足分别为ef且df=de则 abc是等腰三角形吗请说明理由．——青夏 Template

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Take a peek at some of the sketches created by our users, are you a sketchite?

sketch #3506 Goku by Saul Mansanares

anonymous

anonymous
sketch #3506 Goku by Saul Mansanares

sketch #4511 Yao Ming by Betty Marie Melzer

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anonymous
sketch #4511 Yao Ming by Betty Marie Melzer

sketch #5249 Adele - Skyfall by Mert Arda Yiğit

anonymous

anonymous
sketch #5249 Adele - Skyfall by Mert Arda Yiğit

sketch #5177

anonymous

anonymous
sketch #5177

sketch #4874 Milla Jovovich by Kimmy Kitty Perry Priemus

anonymous

anonymous
sketch #4874 Milla Jovovich by Kimmy Kitty Perry Priemus

sketch #1045

anonymous

anonymous
sketch #1045

sketch #1614 uncle bun

Renjith Raj
sketch #1614 uncle bun

sketch #3155 Iron Man

anonymous

anonymous
sketch #3155 Iron Man

sketch #249 Rocket

Lucy Barnard
sketch #249 Rocket

sketch #4093 freefree

anonymous

anonymous
sketch #4093 freefree

sketch #5164

anonymous

anonymous
sketch #5164

sketch #5103

anonymous

anonymous
sketch #5103

sketch #1043 Deadoo..

Cherie N Patanao
sketch #1043 Deadoo..

sketch #4424 MJ by Nycole Prietsch

anonymous

anonymous
sketch #4424 MJ by Nycole Prietsch

sketch #3639

anonymous

anonymous
sketch #3639

sketch #4685 Dave Mustaine by Erika Ishikawa

anonymous

anonymous
sketch #4685 Dave Mustaine by Erika Ishikawa

sketch #4582 Pikachu by Mariana Sanchez Acevedo

anonymous

anonymous
sketch #4582 Pikachu by Mariana Sanchez Acevedo

sketch #2423

anonymous

anonymous
sketch #2423

sketch #4087 Stewie by Leon Soria Ricardo

anonymous

anonymous
sketch #4087 Stewie by Leon Soria Ricardo

sketch #3667

anonymous

anonymous
sketch #3667

sketch #1964 愛鼠繪

愛君
sketch #1964 愛鼠繪

sketch #4972

anonymous

anonymous
sketch #4972

sketch #2922

anonymous

anonymous
sketch #2922

sketch #5261

anonymous

anonymous
sketch #5261

sketch #953

anonymous

anonymous
sketch #953

sketch #78 Dino-Roar

Rachel Roe
sketch #78 Dino-Roar

sketch #2206

anonymous

anonymous
sketch #2206

sketch #1145

anonymous

anonymous
sketch #1145

sketch #4493 Jimi Hendrix by Alex Stoun

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anonymous
sketch #4493 Jimi Hendrix by Alex Stoun

sketch #5369 Wolverine by ShopRasta Roots

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anonymous
sketch #5369 Wolverine by ShopRasta Roots

tomski如图已知d是 abc的bc边的中点de⊥acdf⊥ab垂足分别为ef且df=de则 abc是等腰三角形吗请说明理由．——青夏 coloring

如图已知D是 ABC的BC边的中点DE⊥ACDF⊥AB垂足分别为EF且DF=DE则 ABC是等腰三角形吗请说明理由．——青夏 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D是 ABC中的边BC上的一点∠BAD=∠C∠ABC的平分线交边AC于E交AD于F那么下列结论中错误的是 A BAC sketch template

如图1在 ABC中AC=BC∠ACB=90°点D为AB边中点以点D为顶点作∠PDQ=90°DPDQ分别交直线ACBC于EF sketch template

如图AB是半圆⊙O的直径 ABC的两边ACBC分别交半圆于DE且E为BC的中点已知∠BAC=50°则∠C= A 55 sketch template

已知 如图D是⊿ABC的边BC的中点DE⊥ACDF⊥AB垂足分别是EF且BF＝CE 求证1 ⊿ABC是等腰三角形 2 sketch template

题目如图在 ABC中∠ACB=120°BC=4D为AB的中点DC⊥BC则 ABC的面积是 题目和参考答案——青夏教育精英家教�—— sketch template

如图D是 ABC的边BC上任意一点EF分别是线段ADCE的中点且 ABC的面积为40cm2则 BEF的面积是 Cm2．A．5B sketch template

如图已知 ABC中AB=ACM是BC的中点DE分别是ABAC边上的点且BD=CE1求证MD=ME．2若D为AB的 sketch template

如图已知等边 ABC以边BC为直径的圆与ABAC分别交于点D点E．过点D作DF⊥AC垂足为F．1判断DF与⊙O的位置关系并证明 sketch template

如图�，已知 ABC是等腰直角三角形，∠BAC＝90°，点D是BC的中点．作正方形DEFG，使点A、C分别在DG和DE上，连接AE、BG．（1 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

16．如图已知D E分别是 ABC的边BC和边AC的中点连接DEAD若S=24cm求 DEC的面积——青夏教育精英家教�—— sketch template

怎么证明三角形两边中点的连线平行于底边百度教育 sketch template

题目如图Rt ABC中∠ACB＝90°AC＝3BC＝4D是AB上一动点过点D作DE⊥AC于点EDF⊥BC于点F连结EF则 sketch template

题目1如图1在四边形ABCD中FE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

如图已知C是AB的中点D是AC的中点E是BC的中点 1若AB=18cm求DE的长2若CE=5cm求DB的长——青夏 sketch template

如图�，已知 ABC是等腰直角三角形，∠BAC＝90°，点D是BC的中点．作正方形DEFG，使点A、C分别在DG和DE上，连接AE、BG．（1 sketch template

如图已知等边 ABC的边长为6点D为AC的中点点E为BC的中点点P为BD上一点则PE PC的最小值为 A3B32C23D sketch template

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

如图以 ABC的边AB为直径作⊙O交BC于D过D作⊙O的切线交AC于E要使得DE⊥AC则 ABC的边必须满足的条件是 ．题目和参考 sketch template

如图1，D、E、F分别是 ABC各边上的点，四边形ADEF是平行四边形，有三个选项：�D是AB的中点，�E是BC的中点，�F是AC的中点． sketch template

如图 ABC中AB=AC．∠A=36°AB的中垂线DE交AC于D交AB于E下述结论AD=BD=BC3 BDC的�长等于AB sketch template

14．如图点DEF分别是 ABC三边上的中点．若 ABC 的面积为12则 DEF的面积为 ．——青夏教育精英家教�—— sketch template

如图 ABC中AB=AC．∠A=36°AB的中垂线DE交AC于D交AB于E下述结论AD=BD=BC3 BDC的�长等于AB 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DF两点过点D作DE⊥AC垂足为点E．1判断DE与⊙O的位置 sketch template

22．已知如图在 ABC中AB=ACAE是角平分线BM平分∠ABC交AE于点M经过BM两点的⊙O交BC于点G交AB于点FFB sketch template

如图已知等边 ABC以边BC为直径的圆与ABAC分别交于点D点E．过点D作DF⊥AC垂足为F．1判断DF与⊙O的位置关系并证明 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，等腰三角形ABC的底边BC长为4，面积是12，腰AB的垂直平分线EF分别交AB，AC于点E、F，若点D为底边BC的中点，点M为线段EF上 sketch template

如图1等边三角形ABC的边长为8点P由点B开始沿BC以每秒1个单位长的速度作匀速运动到点C后停止运动点Q由点C开始沿C A B以每 sketch template

如图已知 ABC的内角∠A=α°分别作内角∠ABC与外角∠ACD的平分线两条平分线交于点A1得∠A1∠A1BC和∠A1CD的平分线交 sketch template

如图，在四边形ABCD中，对角线AC与BD交于点O，已知OA =OC，OB=OD，过点O作EF⊥ BD，分别交AB、DC于点E，F，连接DE sketch template

如图已知 ABC中∠C=90°点E在边AB上请过点E作一条直线与 ABC的其他边相交于一点D使得以点AED为顶点的三角形与 sketch template

如图点DE分别是 ABC的边ABAC的中点若DE=6则BC=12．题目和参考答案——青夏教育精英家教�—— sketch template

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