如图所示已知正方形abcde为bc上任意一点延长ab至f使bf=beae的延长线交cf于g试说明ag⊥cf． 题目和参考答案 Sketch Coloring Page

如图所示已知正方形abcde为bc上任意一点延长ab至f使bf=beae的延长线交cf于g试说明ag⊥cf． 题目和参考答案 Template

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tomski如图所示已知正方形abcde为bc上任意一点延长ab至f使bf=beae的延长线交cf于g试说明ag⊥cf． 题目和参考答案 coloring

如图所示已知正方形ABCDE为BC上任意一点延长AB至F使BF=BEAE的延长线交CF于G试说明AG⊥CF． 题目和参考答案 sketch template

10．如图4所示正方形ABCD的对角线相交于点O点E是BC上任意一点EG⊥BD 于GEF⊥AC于F若AC=10则EG EF的值为 sketch template

如图所示正方形ABCD的边长为10厘米EF分别为AB 及BC的中点．四边形BFGE的面积是平方厘米． 题目和参考答案——青夏教育精英家教�—— sketch template

如图已知正方形ABCD的边长为4点EF分别在边ABBC上且AE=BF=1CEDF交于点O．下列结论�∠DOC=90°�OC sketch template

如图在正方形ABCD中点EF分别在CDBC上且BF=CE连接BEAF相交于点G则下列结论不正确的是 A．BE=AFB．∠ sketch template

�国汉代数学家赵爽在注解《�髀算经》时给出的“赵爽弦图”如图所示，它是由四个全等的直角三角形与中间的小正方形拼成的一个大正方形．若大正方形的 sketch template

如图1在正方形ABCD中点EF分别为边BCCD的点AFDE相交于点G．如图1若点EF不是正方形ABCD的边BCCD的中点但 sketch template

题目如图点E是边长为2的正方形ABCD的边BC上的一动点将 ABE沿AE翻折至 AFE的位置若 CDF是等腰三角形则BE sketch template

百度教育 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

百度教育 sketch template

如图在正方形ABCD中点E为对角线AC上的一点连接BEDE．1如图1求证 BCE≌ DCE2如图2延长BE交直线CD于 sketch template

已知正方形ABCD中M是AB的中点E是AB延长线上一点MN⊥DM且交∠CBE的平分线于N 1求证MD＝MN 2若将上述条件 sketch template

如图所示正方形ABCD的边长为10厘米EF分别为AB 及BC的中点．四边形BFGE的面积是平方厘米． 题目和参考答案——青夏教育精英家教�—— sketch template

如图1，正方形ABCD与正方形AEFG的边AB、AE（AB＜AE）在一条直线上，正方形AEFG以点A为旋转中心逆时针旋转，设旋转角为 百度教育 sketch template

题目如图已知正方形ABCD将一块等腰直角三角板的锐角顶点与A重合并将三角板绕A点旋转如图1使它的斜边与BD交于点H一条直角边与 sketch template

如图所示四边形ABCD和四边形DEFG都是正方形连接AECG．1观察图形猜想AE与CG之间有怎样的关系并说明理由．2若将正 sketch template

$1如图1已知正方形ABCD的边长为4圆B的半径为2点P是圆B上的一个动点求PD $frac{1}{2}PC$的最小值和PC sketch template$

如图边长为3的正方形ABCD绕点C按顺时针方�旋转30°后得到的正 方形EFCGEF交AD于点H那么DH的长为 16已知方程有两个 sketch template

如图所示在四棱锥S ABCD中底面ABCD是正方形侧棱SD⊥平面ABCDSD=DC点E是SC的中点作EF⊥SB交SB于点F．1 sketch template

如图正方形ABCD的边长为a分别以正方形的四个顶点为圆心边长为半径在正方形内画弧求图中阴影部分的面积． 题目和参考答案——青夏教育 sketch template

如图，图中所有的三角形都是直角三角形，四边形都是正方形．已知正方形A，B，C，D的边长分别是12，16，9，12，求最大正方形E的面积．百度教育 sketch template

四边形ABCD是正方形点E是边BC上的任意一点∠AEF=90°且EF交正方形外角的平分线CF于点F．1如图1求证AE=EF2 sketch template

题目已知正方形ABCD与正方形CEFGM是AF的中点连接DMEM．1如图1点E在CD上点G在BC的延长线上请判断DMEM sketch template

如图所示在四棱锥S ABCD中底面ABCD是正方形侧棱SD⊥平面ABCDSD=DC点E是SC的中点作EF⊥SB交SB于点F．1 sketch template

如图1，在正方形中，点、分别是、的中点，、相交于点，则可得得结论：�；�。不需要证明。 1如图2，若点、不是正方形的边的中点，但满足 sketch template

10．如图20 2 15a正方形ABCD和正方形BEFC．操作M是线段AB上一动点从A点至B点移动DM⊥MN交对角线BF于点M sketch template

如图1所示已知正方形ABCD的对角线ACBD相交于OE是AC上一点过A作AG⊥BE垂足为GAG交BD于F1试证明OE sketch template

如图所示分别以直角三角形ABC三边为边�外作三个正方形其面积分别用S1S2S3表示若S1=25S3=9则S2的值为 A sketch template

如图所示正方形导线框abcd的质量为m边长为l导线框的总电阻为R．导线框从垂直纸面�里的水平有界匀强磁场的上方某处由静止自由下落下落 sketch template

在如图所示的多面体中已知正方形ABCD和直角梯形BDEF所在的平面互相垂直EF∥BD ED⊥BDADEF =ED =1点P为线段 sketch template

如图所示，正方形ABCD由四个相同的长方形和一个小正方形拼成，则能确定小正方形的面积（）（1）已知 MBA考试题库帮考� 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

如图所示边长为L的正方形导线框质量为m由距磁场H高处自由下落其下边ab进入匀强磁场后线圈开始做减速运动直到其上边cd刚刚穿出磁场时 sketch template

如图所示正方形ABCD的面积为180cm2EF分别为BCAB边的中点求阴影部分的面积． 题目和参考答案——青夏教育精英家教�—— sketch template

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