(完整word版)必修二立体几何11道经典证明题.pdf
《(完整word版)必修二立体几何11道经典证明题.pdf》由会员分享,可在线阅读,更多相关《(完整word版)必修二立体几何11道经典证明题.pdf(10页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、1.如图,三棱柱ABC A1B1C1中,侧棱垂直底面,ACB=90 ,AC=BC=12AA1,D 是棱 AA1的中点()证明:平面BDC1平面 BDC()平面BDC1分此棱柱为两部分,求这两部分体积的比.2.如图5 所示,在四棱锥PABCD中,AB平面PAD,/ABCD,PDAD,E是PB的中点,F是CD上的点且12DFAB,PH为PAD中AD边上的高.(1)证明:PH平面ABCD;(2)若1PH,2AD,1FC,求三棱锥EBCF的体积;(3)证明:EF平面PAB.3.如图,在直三棱柱111ABCA B C中,1111ABAC,DE,分别是棱1BCCC,上的点(点D不同于点C),且A DD E
2、 F,为11B C的中点求证:(1)平面ADE平面11BCC B;(2)直线1/A F平面ADEB1C B A D C1A14.如图,四棱锥PABCD 中,ABCD 为矩形,PAD 为等腰直角三角形,APD=90,面 PAD 面 ABCD,且 AB=1,AD=2,E、F 分别为 PC 和 BD 的中点(1)证明:EF面 PAD;(2)证明:面PDC面 PAD;(3)求四棱锥PABCD 的体积5.在如图所示的几何体中,四边形ABCD是正方形,MA平面ABCD,/PDMA,E、G、F分别为MB、PB、PC的中点,且2ADPDMA.(I)求证:平面EFG平面PDC;(II)求三棱锥PMAB与四棱锥P
3、ABCD的体积之比.ABDCPMFGE文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7
4、M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ
5、4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2
6、W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8
7、D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:
8、CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 H
9、T2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H8文档编码:CZ4Q9Y4P3R1 HT2W3L1Q9V10 ZP8D7M3Y3H86.如图,正方形ABCD 和四边形ACEF所在的平面互相垂直。EF/AC,AB=2,CE=EF=1()求证:AF/平面 BDE;()求证:CF平面 BDF;7.如 图,在 多 面 体ABCDEF中,四 边 形ABCD是 正 方
10、 形,AB=2EF=2,EFAB,EF FB,BFC=90,BF=FC,H 为 BC 的中点,()求证:FH平面 EDB;()求证:AC 平面 EDB;()求四面体B DEF 的体积;8.如图,在直三棱柱111ABCA B C中,E、F分别是1A B、1AC的中点,点D在11B C上,11A DB C。求证:(1)EF平面 ABC;(2)平面1A FD平面11BBC C.DACBEFHABDCFE文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H
11、2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G
12、8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10
13、C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4
14、N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6
15、E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码
16、:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8
17、P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6图 5DGBFCAE图 4GEFABCD9.如图 4,在边长为1 的等边三角形ABC中,D E分别是,AB AC边上的点,ADAE,F是BC的中点,AF与DE交于点G,将ABF沿AF折起,得到如图5 所示的三棱锥ABCF,其中22BC.(1)证明:DE/平面BCF;(2)证明:CF平面ABF;(3)当23AD时,求三棱锥FDEG的体积FDEGV.10.如图,在四棱锥
18、PABCD中,/ABCD,ABAD,2CDAB,平面PAD底面ABCD,PAAD,E和F分别是CD和PC的中点,求证:(1)PA底 面ABCD;(2)/BE平 面PAD;(3)平 面BEF平面PCD文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX
19、4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E
20、6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编
21、码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H
22、8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10
23、H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6
24、G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U1
25、0C3 ZX4N4R8E6E611.(2013 年山东卷)如图,四棱锥PABCD中,ABAC ABPA,2ABCD ABCD,E F G M N分别为,PB AB BC PD PC的中点()求证:CEPAD平面;()求证:EFGEMN平面平面文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P3A10H2 HP6G8K4U10C3 ZX4N4R8E6E6文档编码:CE7H8P
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 完整 word 必修 立体几何 11 道经 证明
限制150内