>
数学
>
如图所示,在正方形ABCD中,AO⊥BD,OE,FG,HI都垂直于AD,EF,GH,IJ都垂直于AO,若已知S
△AIJ
=1,则正方形ABCD的面积为______.
人气:473 ℃ 时间:2020-03-28 08:42:03
解答
在Rt△AIJ中,∵S△AIJ=12(IJ)2=1∴IJ=2在Rt△IJH中,IH=2IJ=2;在Rt△IHG中,GH=2IH=22;在Rt△GHF中,GF=2GH=4;在Rt△GFE中,EF=2GF=42;在Rt△EFO中,OE=ED=2EF=8;∴AD=2ED=16∴正方形ABCD的面积为:162=256...
推荐
在正方形ABCD中,AO垂直于BD,OE,FG,HI都垂直于AD,EF,GH,IJ垂直于AO,若已知三角形的面积为1
正方形abcd中,o是bd的中点,oe,fg,hi都垂直于ad,ef,gh,ij都垂直于oa,若三角形aij的面积=1,则正方
如图所示,正方形ABCD中,O是对角线AC,BD的交点,过O作OE垂直于OF,分别交AB,BC于E,F若AE=4,CF=3,EF=
已知正方形ABCD的对角线交于O点,OE垂直OF,AE=4,CF=3,求EF.
在正方形ABCD 任意两条垂直的直线EF、GH交与正方形各边
已知a+3与2a-15是m的两个平方根,求m的值.
The lady ______ a blue dress is my aunt.A:with B:in C:on D:under
She was often heard ( ) in English.AsingBsingingCsungDto sing答案选D,为什么不选A,
猜你喜欢
He has a good knowledge of many foreign languages,and one of them is English which is language spoken by many people in
[(x-y) (x+y)]^3 积的乘方
六(3)班今天缺勤人数占出勤人数的七分之一,后来又有一名同学请假,这时缺勤人数是出勤人数的六分之一,这个班有学生多少人?
leave children staying at home
共29吨大车每辆每次运2顿,小车3吨各用几辆一次运完?两种方程
1.十一分之六乘十五分之七乘十 2.一百分之十九乘八分之三乘五十
jian xian er si qi yan,jian bu xian er nei xing ye的中文怎么写?(这是汉语拼音哦!)
关于和谐语言生活的话题作文
© 2024 79432.Com All Rights Reserved.
电脑版
|
手机版