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 Coloring Page

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 Template

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

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anonymous

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sketch #1287 No smoke

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sketch #3908 Rawr! by Timothy Palfreyman

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sketch #3908 Rawr! by Timothy Palfreyman

sketch #5080 Megaman Zero (X) by Muhammad Raiyaan

anonymous

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sketch #5080 Megaman Zero (X) by Muhammad Raiyaan

sketch #5113 Growlithe and Arcanine by Kervinzitho del Piero

anonymous

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tomski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 coloring

如图， ABC为等边三角形，以BC为斜边�下作等腰直角三角形BDC，连接AD交BC于点O．E为线段AC上一动点（不与A，C重合），连接BE 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，以 ABC的边AB、AC为边�外作正方形ABDE和正方形ACFG，AH⊥BC，垂足为点H，交EG于点M．求证：EM=MG．百度教育 sketch template

如图�分别以直角三角形ABC三边为直径�外作三个半圆其面积分别用S1S2S3表示则不难证明S1=S2 S3．1如图�分别以直角 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， 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

1如图1 ABC为等边三角形点D为BC边上一点作DE∥AC交AB于点E说明 BDE也是等边三角形．2如图2 ABC为等边三角 sketch template

如图已知等边 ABCP在AC延长线上一点以PA为边作等边 APEEC延长线交BP于M连接AM求证1BP=CE2试证明 sketch template

已知 ABC为等边三角形点D为直线BC上的一动点以AD为边作等边 ADE顶点ADE按逆时针方�排列连接CE．1如图1当点D sketch template

题目如图已知 ABC是边长为3的等边三角形点D是边BC上的一点且BD＝1以AD为边作等边 ADE过点E作EF∥BC交AC于点F sketch template

如图已知 ABC为等边三角形点D由点C出�在BC的延长线上运动连结AD以AD为边作等边三角形ADE连结CE．1请写出ACCD sketch template

【初步感知�如图1，已知 ABC为等边三角形，点D为边BC上一动点点D不与点B，点C重合以AD为边�右侧作等边 ADE，连接CE求证：【类比 sketch template

如图已知等边三角形ABC在BC的延长线上取一点E以CE为边作等边三角形DCE连接AEBD．点M是BD的中点点N是AE的中点．1在图 sketch template

如图已知等边 ABC的边长为a点P是BC边上一动点以AP为边作等边 APQ边PQ交AC于点O连接CQ1求证 ABP≌ ACQ sketch template

如图�已知C是线段AB上的一点分别以ACBC为边长在AB的同侧作等边 ADC和 CBE1你能证明AE与BD相等吗为什么2如 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

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�分别以直角三角形ABC三边为直径�外作三个半圆其面积分别用S1S2S3表示则不难证明S1＝S2 S3 1如图�分别以 sketch template

题目如图已知等边 ABC请用直尺和圆规按下列要求作图不要求写作法但要保留作图痕迹 1作 ABC的外心O2设D是AB sketch template

1如图1所示在等边 ABC中点D是AB边上的动点以CD为一边�上作等边 EDC连接AE求证AE∥BC中等边 ABC的形状改 sketch template

如图所示已知等边三角形ABC的边长为1按图中所示的规律用2011个这样的等边三角形镶嵌而成的四边形的�长是．题目和参考答案——青夏 sketch template

百度教育 sketch template

如图�分别以直角三角形ABC三边为直径�外作三个半圆其面积分别用S1S2S3表示 1 如图�分别以直角三角形ABC三边为 sketch template

如图�分别以直角三角形ABC三边为直径�外作三个半圆其面积分别用S1S2S3表示则不难证明S1=S2 S3．1如图�分别以直角 sketch template

如图所示，分别以 ABC的边AB、AC为边，�三角形的外侧作正方形ABDE和正方形ACFG，点M为BC中点，1求证：AM⊥EG．2求证 sketch template

如图 ABC是等腰直角三角形以直角边AB为直径作半圆与斜边AC交于D且AB=20厘米求阴影部分的面积．题目和参考答案——青夏教育 sketch template

如图以 ABC的ABAC为一边�外作正方形ABGF和ACDE两个正方形对角线交点分别是MNP是BC中点求证PM＝PN．题目和 sketch template

如图以直角三角形ABC的三边长分别为6cm 8cm10cm分别以它的三边为直径�上做三个半圆则图中的阴影部分面积为 ——青夏教育 sketch template

如图以 ABC的三边为边长在BC的同侧作三个等边三角形即 ABD BCE ACF．1四边形ADEF是什么四边形试说明理由．2 sketch template

如图已知正方形ABCD以CD为边�外作等边三角形CDEBE与AC相交于点F求证EF=CF BF 百度教育 sketch template

1． ABC的三边长分别为AC=3 BC=4 AB=5 以AB所在直线为轴将此三角形旋转一� 求所得旋转体的表面积——青夏 sketch template

如图等边 ABC中点D在AB上点E在BC上AD=BE．AE和CD相交于点P求证∠CPE=60°．题目和参考答案——青夏教育精英家教�—— sketch template

如图以 ABC的BC边上一点O为圆心的圆经过AB两点且AC是切线⊙O与BC边交于点ED为BE的下半圆弧的中点连接AD交BC于F sketch template

2．如图�分别以直角三角形ABC三边为直径�外作三个半圆其面积分别用S1S2S3表示则不难证明S1=S2 S3 1 如图� sketch template

如图已知等边 ABC和点P设点P到 ABC三边ABACBC的距离分别为h1h2h3 ABC的高为h．在图1中点P是边BC的 sketch template

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