Princess Diana''s Daring Little Black Dress by the Emanuels Sells at Auction for Pounds 192,000; CHGGFGFGFGHG HGHGHFGFGFG HGHFGFGGHG DIANA'S CLOTHES BY DAVID EMANUEL AND WIFE ELIZABETH ATTRACTED GLOBAL INTEREST AS THEY WENT UNDER THE HAMMER YESTERDAY, REPORTS HELEN TURNER Read preview Newsp...
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∠BFD,两直线平行,内错角相等; BF(或FG),同位角相等,两直线平行;∠CHD(或∠CHG);∠CHD(或∠CHG),对顶角相等;
A日CHGEF如图,四边形ACEH是梯形,ACEG是平行四边形,ABGH是正方形,CDFG是长方形,已知AC=6厘米,HE=10厘米,求阴影部分的面积.
如图,矩形EFGH的四个顶点分别在矩形ABCD的各条边上,AB=EF,FG=3,GC=4.有以下四个结论:①∠BGF=∠CHG;②△BFG≌△DHE;③tan∠BFG=;
[解答](1)在正方体中,与线段AB平行的线段有线段CD、线段GH、线段EF。(2) 在正方形BCGF中,与线段FG垂直的线段有线段BF、线段CG。故答案为:(1)线段CD、线段GH、线段EF;(2)线段BF、线段CG。[分析]在同一平面内,不相交的两条直线叫做平行线;两条直线相交成直角时,这两条直线叫做互相垂直。相关...
如图,矩形EFGH的四个顶点分别落在矩形ABCD的各条边上,AB=EF,FG=2,GC=3,有以下四个结论:①∠ BGF=∠ CHG,②△ BFG≌△ DHE,③tan
[题目]已知:在矩形ABCD中.点F为AD中点,点E为AB边上一点.连接CE.EF.CF.EF平分∠AEC.(1)如图1.求证:CF⊥EF;(2)如图2.延长CE.DA交于点K, 过点F作FG∥AB交CE于点G若.点H为FG上一点.连接CH,若∠CHG=∠BCE, 求证:CH=FK; (3)如图3, 过点H作HN⊥CH交AB于点N,若EN=11,FH-GH=1,求GK长.