如图1点o是正方形abcd两对角线的交点分别延长od到点goc到点e使og=2odoe=2oc然后以ogoe为邻边作正方形 Sketch Coloring Page

如图1点o是正方形abcd两对角线的交点分别延长od到点goc到点e使og=2odoe=2oc然后以ogoe为邻边作正方形 Template

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sketch #5131 Miley Cyrus by Vannak Von

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tomski如图1点o是正方形abcd两对角线的交点分别延长od到点goc到点e使og=2odoe=2oc然后以ogoe为邻边作正方形 coloring

如图1，已知O为正方形ABCD对角线的交点，点E在边CB的延长线上，连结EO，OF⊥OE交BA延长线于点F，连结EF．1求证：EO＝FO sketch template

题目如图在正方形ABCD中对角线AC与BD相交于点O点E是BC上的一个动点连接DE交AC于点F．1如图�当时求 的值 sketch template

（1）如图1，正方形�格中，点A，B，C，D为格点，AB交CD于点O．则sin∠AOC=．（2）如图2，点P是线段AB上的动点，分别以AP sketch template

如图1已知正方形ABCD的对角线ACBD相交于点OE是AC上一点连接EB过点A作AM⊥BE垂足为MAM交BD于点F．1求证 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点E是正方形ABCD的边CD上一点连结AE过点A作AF⊥AE交CB的延长线于点F1求证AE=AF2连结EFM为EF sketch template

如图1正方形ABCD中点O为对角线AC的中点点P在直线上AC作直线BP分别作AE⊥BPCF⊥BP垂足分别为点E点F．1求证 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

题目如图1已知点G在正方形ABCD的对角线AC上GE⊥BCGF⊥CD．1�求证四边形CEGF是正方形�推断的值为 sketch template

1如图1点M是正方形ABCD内一定点请你在图1中过点M作一条直线使它将矩形ABCD分成相等的两部分．2如图2在平面直角坐标系中 sketch template

如图，在边长为8的正方形ABCD中，点P，Q分别是边AB，AD上的两动点（点P，Q不与点A，B，D重合），以AP，AQ为邻边作矩形APEQ sketch template

1如图1点M是正方形ABCD内一定点请你在图1中过点M作一条直线使它将矩形ABCD分成相等的两部分．2如图2在平面直角坐标系中 sketch template

题目如图1在正方形ABCD中AD=6点P是对角线BD上任意一点连接PAPC过点P作PE⊥PC交直线AB于点E1求证 sketch template

如图1点O是正方形ABCD两对角线的交点分别延长OD到点GOC到点E使OG=2ODOE=2OC然后以OGOE为邻边作正方形 sketch template

圆的透视为正椭圆（一）知乎 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

如图正方形ABCD的面积为36cm2点E在BC上点G在AB的延长线上四边形EFGB是正方形以点B为圆心BC的长为半径画 sketch template

如图正方形ABCD的边长为2点A与O重合点C在y轴上求正方形ABCD各顶点的坐标．题目和参考答案——青夏教育精英家教�—— sketch template

两条对角线 的四边形是正方形——青夏教育精英家教�—— sketch template

如图在正方形ABCD中点EF分别在CDBC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

将正方形的一个顶点与正方形的对角线交叉重合如图�位置则阴影部分面积是正方形面积的将正方形与按图�放置则阴影部分面积是正方形面积的 sketch template

如图正方形ABCD中AC是对角线今有较大的直角三角板一边始终经过点B直角顶点P在射线AC上移动另一边交DC于Q．1如图�当点 sketch template

如图在正方形�格中每个小正方形的边长都是1．四边形ABCD的四个顶点都在格点上点O为AD的中点．把四边形ABCD绕点O顺时针旋转180 sketch template

如图1点E正方形ABCD外一点点F是线段AE上一点 EBF是等腰直角三角形其中∠EBF=90°连接CECF．1求证 ABF≌ sketch template

1如图1梯形ABCD中对角线交于点OAB∥CD请写出图中面积相等的三角形2如图2在直角坐标系中O是坐标原点点A．�分别求 sketch template

如图所示⊙O是正方形ABCD的外接圆点P在⊙O上则∠APB等于A30°B45°C55°D60°——青夏教育精英家教�—— sketch template

已知中AD为中线求的长——青夏教育精英家教�—— sketch template

圆的透视为正椭圆（一）知乎 sketch template

圆的透视为正椭圆（一）知乎 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GEF⊥AC于F若AC=10则EG EF的值为 sketch template

百度教育 sketch template

如图，在中，对角线AC，BD相交于点O， 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四边形EFGH的面积是66平方米．EA=ABCB=BFDC=CGHD=DA．求四边形ABCD的面积．题目和参考答案——青夏教育 sketch template

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