新高考數(shù)學(xué)一輪復(fù)習(xí)百題刷過(guò)關(guān)專(zhuān)題12 平面向量綜合必刷100題(原卷版)_第1頁(yè)
新高考數(shù)學(xué)一輪復(fù)習(xí)百題刷過(guò)關(guān)專(zhuān)題12 平面向量綜合必刷100題(原卷版)_第2頁(yè)
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專(zhuān)題12平面向量綜合必刷100題任務(wù)一:善良模式(基礎(chǔ))1-30題一、單選題1.已知SKIPIF1<0,向量SKIPIF1<0,若SKIPIF1<0,則實(shí)數(shù)SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0 C.-2 D.22.設(shè)SKIPIF1<0中SKIPIF1<0邊上的中線為SKIPIF1<0,點(diǎn)SKIPIF1<0滿(mǎn)足SKIPIF1<0,則SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.若平面向量SKIPIF1<0兩兩的夾角相等,且SKIPIF1<0,則SKIPIF1<0()A.2 B.5 C.2或5 D.SKIPIF1<0或SKIPIF1<04.在菱形SKIPIF1<0中,SKIPIF1<0、SKIPIF1<0分別是SKIPIF1<0、SKIPIF1<0的中點(diǎn),若SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0()A.0 B.SKIPIF1<0 C.4 D.SKIPIF1<05.如圖,點(diǎn)SKIPIF1<0在半徑為SKIPIF1<0的SKIPIF1<0上運(yùn)動(dòng),SKIPIF1<0若SKIPIF1<0,則SKIPIF1<0的最大值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.已知向量SKIPIF1<0滿(mǎn)足SKIPIF1<0,則SKIPIF1<0與SKIPIF1<0夾角為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.已知SKIPIF1<0,SKIPIF1<0,,則SKIPIF1<0在SKIPIF1<0方向上的投影為()A.1 B.5 C.SKIPIF1<0 D.SKIPIF1<08.在SKIPIF1<0中,SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0取最小值時(shí)SKIPIF1<0的值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<09.在SKIPIF1<0中,點(diǎn)SKIPIF1<0是線段SKIPIF1<0上靠近點(diǎn)SKIPIF1<0的三等分點(diǎn),點(diǎn)SKIPIF1<0在線段SKIPIF1<0上,SKIPIF1<0,則SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<010.已知點(diǎn)SKIPIF1<0,若過(guò)點(diǎn)SKIPIF1<0的直線l交圓于C:SKIPIF1<0于A,B兩點(diǎn),則SKIPIF1<0的最大值為()A.12 B.SKIPIF1<0 C.10 D.SKIPIF1<011.以下四個(gè)命題中正確的是()A.若SKIPIF1<0,則SKIPIF1<0三點(diǎn)共線B.若SKIPIF1<0為空間的一個(gè)基底,則SKIPIF1<0構(gòu)成空間的另一個(gè)基底C.SKIPIF1<0D.SKIPIF1<0為直角三角形的充要條件是SKIPIF1<012.已知向量SKIPIF1<0、SKIPIF1<0滿(mǎn)足SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0在SKIPIF1<0方向上的投影是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<013.在△ABC中,已知AB=3,AC=5,△ABC的外接圓圓心為O,則SKIPIF1<0A.4 B.8 C.10 D.1614.已知向量SKIPIF1<0與向量SKIPIF1<0不共線,SKIPIF1<0,對(duì)任意SKIPIF1<0,恒有SKIPIF1<0,則()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<015.如圖所示,矩形SKIPIF1<0的對(duì)角線相交于點(diǎn)SKIPIF1<0,點(diǎn)SKIPIF1<0在線段SKIPIF1<0上且SKIPIF1<0,若SKIPIF1<0(SKIPIF1<0,SKIPIF1<0),則SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0二、多選題16.已知平面向量SKIPIF1<0、SKIPIF1<0、SKIPIF1<0為三個(gè)單位向量,且SKIPIF1<0,若SKIPIF1<0(SKIPIF1<0),則SKIPIF1<0的取值可能為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<017.下列說(shuō)法中錯(cuò)誤的是()A.已知SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0與SKIPIF1<0可以作為平面內(nèi)所有向量的一組基底B.若SKIPIF1<0與SKIPIF1<0共線,則SKIPIF1<0在SKIPIF1<0方向上的投影為SKIPIF1<0C.若兩非零向量SKIPIF1<0,SKIPIF1<0滿(mǎn)足SKIPIF1<0,則SKIPIF1<0D.平面直角坐標(biāo)系中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0為銳角三角形18.設(shè)SKIPIF1<0,SKIPIF1<0是兩個(gè)非零向量,下列四個(gè)命題為真命題的是()A.若SKIPIF1<0,則SKIPIF1<0和SKIPIF1<0的夾角為SKIPIF1<0B.若SKIPIF1<0,則SKIPIF1<0和SKIPIF1<0的夾角為SKIPIF1<0C.若SKIPIF1<0,則SKIPIF1<0和SKIPIF1<0方向相同D.若SKIPIF1<0,則SKIPIF1<0和b的夾角為鈍角19.在SKIPIF1<0中,有如下四個(gè)命題正確的有()A.若SKIPIF1<0,則SKIPIF1<0為銳角三角形B.若SKIPIF1<0,則SKIPIF1<0的形狀為直角三角形C.SKIPIF1<0內(nèi)一點(diǎn)G滿(mǎn)足SKIPIF1<0,則G是SKIPIF1<0的重心D.若SKIPIF1<0,則點(diǎn)P必為SKIPIF1<0的外心20.已知向量SKIPIF1<0是兩個(gè)非零向量,在下列條件中,一定能使SKIPIF1<0共線的是()A.SKIPIF1<0且SKIPIF1<0B.存在相異實(shí)數(shù)SKIPIF1<0,使SKIPIF1<0C.SKIPIF1<0(其中實(shí)數(shù)x,y滿(mǎn)足SKIPIF1<0)D.已知梯形ABCD,其中SKIPIF1<0第II卷(非選擇題)三、填空題21.已知在SKIPIF1<0中,SKIPIF1<0,則SKIPIF1<0___________.22.在SKIPIF1<0中,點(diǎn)SKIPIF1<0滿(mǎn)足SKIPIF1<0,當(dāng)SKIPIF1<0點(diǎn)在線段SKIPIF1<0上移動(dòng)時(shí),若SKIPIF1<0,則SKIPIF1<0的最小值是________.23.在SKIPIF1<0中,點(diǎn)D是邊SKIPIF1<0的中點(diǎn),點(diǎn)G在SKIPIF1<0上,且是SKIPIF1<0的重心,則用向量SKIPIF1<0?SKIPIF1<0表示SKIPIF1<0為_(kāi)__________.24.已知點(diǎn)G為△ABC的重心,過(guò)G作直線與AB、AC兩邊分別交于M、N兩點(diǎn),且SKIPIF1<0=xSKIPIF1<0,SKIPIF1<0=y(tǒng)SKIPIF1<0,求SKIPIF1<0的值為_(kāi)_______.25.如圖,在菱形SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0.已知SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0______.四、解答題26.已知SKIPIF1<0,SKIPIF1<0,SKIPIF1<0.(1)求SKIPIF1<0與SKIPIF1<0的夾角θ;(2)求SKIPIF1<0;(3)若SKIPIF1<0,求實(shí)數(shù)λ的值.27.已知O,A,B是不共線的三點(diǎn),且SKIPIF1<0(1)若m+n=1,求證:A,P,B三點(diǎn)共線;(2)若A,P,B三點(diǎn)共線,求證:m+n=1.28.如圖,已知D,E,F(xiàn)分別為SKIPIF1<0的三邊SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的中點(diǎn),求證:SKIPIF1<0.29.已知向量SKIPIF1<0,SKIPIF1<0,SKIPIF1<0.(1)若點(diǎn)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0能夠成三角形,求實(shí)數(shù)SKIPIF1<0應(yīng)滿(mǎn)足的條件;(2)若SKIPIF1<0為直角三角形,且SKIPIF1<0為直角,求實(shí)數(shù)SKIPIF1<0的值.30.設(shè)SKIPIF1<0的內(nèi)角A,B,C的對(duì)邊長(zhǎng)a,b,c成等比數(shù)列,SKIPIF1<0,延長(zhǎng)SKIPIF1<0至D使SKIPIF1<0.(1)求SKIPIF1<0的大?。唬?)求SKIPIF1<0的取值范圍.任務(wù)二:中立模式(中檔)1-40題一、單選題1.設(shè)SKIPIF1<0、SKIPIF1<0、SKIPIF1<0為非零不共線向量,若SKIPIF1<0,則()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.在平面直角坐標(biāo)系SKIPIF1<0中,已知點(diǎn)SKIPIF1<0.若動(dòng)點(diǎn)M滿(mǎn)足SKIPIF1<0,則SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.已知SKIPIF1<0是邊長(zhǎng)為2的正方形,SKIPIF1<0為平面SKIPIF1<0內(nèi)一點(diǎn),則SKIPIF1<0的最小值是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.已知點(diǎn)SKIPIF1<0為正SKIPIF1<0所在平面上一點(diǎn),且滿(mǎn)足SKIPIF1<0,若SKIPIF1<0的面積與SKIPIF1<0的面積比值為SKIPIF1<0,則SKIPIF1<0的值為()A.SKIPIF1<0 B.SKIPIF1<0C.2 D.35.已知直線SKIPIF1<0:SKIPIF1<0與圓SKIPIF1<0:SKIPIF1<0的交點(diǎn)為SKIPIF1<0,SKIPIF1<0,點(diǎn)SKIPIF1<0是圓SKIPIF1<0上一動(dòng)點(diǎn),設(shè)點(diǎn)SKIPIF1<0,則SKIPIF1<0的最大值為()A.9 B.10 C.11 D.126.已知平面向量SKIPIF1<0滿(mǎn)足SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0的最小值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.已知向量SKIPIF1<0,SKIPIF1<0,SKIPIF1<0為平面向量,SKIPIF1<0,且SKIPIF1<0使得SKIPIF1<0與SKIPIF1<0所成夾角為SKIPIF1<0,則SKIPIF1<0的最大值為()A.SKIPIF1<0 B.SKIPIF1<0 C.1 D.SKIPIF1<08.非零向量SKIPIF1<0,SKIPIF1<0滿(mǎn)足SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0為()A.三邊均不相等的三角形 B.直角三角形 C.等腰非等邊三角形 D.等邊三角形9.在SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<010.已知SKIPIF1<0的三個(gè)內(nèi)角分別為SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,動(dòng)點(diǎn)SKIPIF1<0滿(mǎn)足SKIPIF1<0,SKIPIF1<0,則動(dòng)點(diǎn)SKIPIF1<0的軌跡一定經(jīng)過(guò)SKIPIF1<0的()A.重心 B.垂心 C.內(nèi)心 D.外心11.已知平面向量SKIPIF1<0滿(mǎn)足SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,若對(duì)于任意實(shí)數(shù)SKIPIF1<0,不等式SKIPIF1<0恒成立,則實(shí)數(shù)SKIPIF1<0的取值范圍是SKIPIF1<0SKIPIF1<0A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<012.已知A、B、C是平面上不共線的三點(diǎn),O為△ABC的外心,動(dòng)點(diǎn)P滿(mǎn)足SKIPIF1<0,則點(diǎn)P的軌跡一定過(guò)△ABC的()A.內(nèi)心 B.垂心 C.重心 D.AC邊的中點(diǎn)13.平面內(nèi)SKIPIF1<0及一點(diǎn)SKIPIF1<0滿(mǎn)足SKIPIF1<0,則點(diǎn)SKIPIF1<0是SKIPIF1<0的()A.重心 B.內(nèi)心 C.外心 D.垂心14.設(shè)點(diǎn)SKIPIF1<0是SKIPIF1<0的重心,且滿(mǎn)足SKIPIF1<0,則SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<015.若直線SKIPIF1<0過(guò)△SKIPIF1<0的重心SKIPIF1<0,且SKIPIF1<0,SKIPIF1<0,其中SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0的最小值是().A.SKIPIF1<0 B.SKIPIF1<0 C.2 D.SKIPIF1<016.在SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0,SKIPIF1<0,則點(diǎn)SKIPIF1<0的軌跡一定通過(guò)SKIPIF1<0的()A.重心 B.內(nèi)心C.外心 D.垂心17.在SKIPIF1<0中,角SKIPIF1<0、SKIPIF1<0、SKIPIF1<0的對(duì)邊分別為SKIPIF1<0、SKIPIF1<0、SKIPIF1<0,若SKIPIF1<0,SKIPIF1<0,點(diǎn)SKIPIF1<0是SKIPIF1<0的重心,且SKIPIF1<0,則SKIPIF1<0()A.SKIPIF1<0或SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0或SKIPIF1<0 D.SKIPIF1<018.在SKIPIF1<0中,SKIPIF1<0是SKIPIF1<0的中點(diǎn),SKIPIF1<0是SKIPIF1<0的中點(diǎn),過(guò)點(diǎn)SKIPIF1<0作一直線SKIPIF1<0分別與邊SKIPIF1<0,SKIPIF1<0交于SKIPIF1<0,SKIPIF1<0,若SKIPIF1<0,則SKIPIF1<0的最小值是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<019.已知圓SKIPIF1<0的半徑為2,A為圓內(nèi)一點(diǎn),SKIPIF1<0,B,C為圓SKIPIF1<0上任意兩點(diǎn),則SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<020.已知SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,若對(duì)任意實(shí)數(shù)SKIPIF1<0,SKIPIF1<0(SKIPIF1<0)恒成立,則SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0二、多選題21.?dāng)?shù)學(xué)家歐拉于1765年在其著作《三角形中的幾何學(xué)》首次指出:SKIPIF1<0的外心SKIPIF1<0,重心SKIPIF1<0,垂心SKIPIF1<0,依次位于同一條直線上,且重心到外心的距離是重心到垂心距離的一半,該直線被稱(chēng)為歐拉線.若SKIPIF1<0,SKIPIF1<0,則下列各式正確的是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<022.著名數(shù)學(xué)家歐拉提出了如下定理:三角形的外心、重心、垂心依次位于同一直線上,且重心到外心的距離是重心到垂心距離的一半.此直線被稱(chēng)為三角形的歐拉線,該定理被稱(chēng)為歐拉線定理.已知△ABC的外心為O,重心為G,垂心為H,M為BC中點(diǎn),且AB=4,AC=2,則下列各式正確的有()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<023.在SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,下述四個(gè)結(jié)論中正確的是()A.若SKIPIF1<0為SKIPIF1<0的重心,則SKIPIF1<0B.若SKIPIF1<0為SKIPIF1<0邊上的一個(gè)動(dòng)點(diǎn),則SKIPIF1<0為定值2C.若SKIPIF1<0,SKIPIF1<0為SKIPIF1<0邊上的兩個(gè)動(dòng)點(diǎn),且SKIPIF1<0,則SKIPIF1<0的最小值為SKIPIF1<0D.已知SKIPIF1<0為SKIPIF1<0內(nèi)一點(diǎn),若SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0的最大值為224.已知SKIPIF1<0為SKIPIF1<0所在平面內(nèi)一點(diǎn),且SKIPIF1<0,SKIPIF1<0,SKIPIF1<0是邊SKIPIF1<0的三等分點(diǎn)靠近點(diǎn)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0與SKIPIF1<0交于點(diǎn)SKIPIF1<0,則()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<0的最小值為-625.在SKIPIF1<0中,角SKIPIF1<0、SKIPIF1<0、SKIPIF1<0所對(duì)的邊分別是SKIPIF1<0、SKIPIF1<0、SKIPIF1<0,點(diǎn)SKIPIF1<0是其所在平面內(nèi)一點(diǎn),()A.若SKIPIF1<0,則點(diǎn)SKIPIF1<0在SKIPIF1<0的中位線上B.若SKIPIF1<0,則SKIPIF1<0為SKIPIF1<0的重心C.若SKIPIF1<0,則SKIPIF1<0為銳角三角形D.若SKIPIF1<0,則SKIPIF1<0是等腰三角形26.下列說(shuō)法中錯(cuò)誤的為()A.已知SKIPIF1<0,SKIPIF1<0且SKIPIF1<0與SKIPIF1<0夾角為銳角,則SKIPIF1<0B.點(diǎn)SKIPIF1<0為SKIPIF1<0的內(nèi)心,且SKIPIF1<0,則SKIPIF1<0為等腰三角形;C.若SKIPIF1<0與SKIPIF1<0平行,SKIPIF1<0在SKIPIF1<0方向上的投影為SKIPIF1<0D.若非零SKIPIF1<0,SKIPIF1<0滿(mǎn)足SKIPIF1<0則SKIPIF1<0與SKIPIF1<0的夾角是SKIPIF1<027.如圖,ABCD中,AB=1,AD=2,∠BAD=SKIPIF1<0,E為CD的中點(diǎn),AE與DB交于F,則下列敘述中,一定正確的是()A.SKIPIF1<0在SKIPIF1<0上的投影向量為(0,0) B.SKIPIF1<0C.SKIPIF1<0 D.若SKIPIF1<0,則SKIPIF1<028.已知SKIPIF1<0是△SKIPIF1<0所在平面內(nèi)一點(diǎn),則下列說(shuō)法正確的是()A.若SKIPIF1<0,則SKIPIF1<0是△SKIPIF1<0的重心B.若向量SKIPIF1<0,且SKIPIF1<0,則△SKIPIF1<0是正三角形C.若SKIPIF1<0是△SKIPIF1<0的外心,SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0的值為-8D.若SKIPIF1<0,則SKIPIF1<0第II卷(非選擇題)三、填空題29.如圖,△ABC中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0為△ABC重心,P為線段BG上一點(diǎn),則SKIPIF1<0的最大值為_(kāi)__________.30.在SKIPIF1<0中,下列命題中正確的有:___________①SKIPIF1<0;②若SKIPIF1<0,則SKIPIF1<0為銳角三角形;③SKIPIF1<0是SKIPIF1<0所在平面內(nèi)一定點(diǎn),動(dòng)點(diǎn)SKIPIF1<0滿(mǎn)足SKIPIF1<0,SKIPIF1<0,則動(dòng)點(diǎn)SKIPIF1<0一定過(guò)SKIPIF1<0的重心;④SKIPIF1<0是SKIPIF1<0內(nèi)一定點(diǎn),且SKIPIF1<0,則SKIPIF1<0;⑤若SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0為等邊三角形.31.已知向量SKIPIF1<0,SKIPIF1<0是平面內(nèi)的兩個(gè)非零向量,則當(dāng)SKIPIF1<0取最大值時(shí),SKIPIF1<0與SKIPIF1<0夾角為_(kāi)_______.32.點(diǎn)SKIPIF1<0為SKIPIF1<0所在平面內(nèi)一點(diǎn),SKIPIF1<0,SKIPIF1<0,若SKIPIF1<0的面積為SKIPIF1<0,則SKIPIF1<0的最小值是________.33.①若SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0為銳角,則實(shí)數(shù)SKIPIF1<0的取值范圍是SKIPIF1<0②點(diǎn)SKIPIF1<0在SKIPIF1<0所在的平面內(nèi),若SKIPIF1<0,則點(diǎn)SKIPIF1<0為SKIPIF1<0的垂心③點(diǎn)SKIPIF1<0在SKIPIF1<0所在的平面內(nèi),若SKIPIF1<0,SKIPIF1<0,SKIPIF1<0分別表示SKIPIF1<0,SKIPIF1<0的面積,則SKIPIF1<0④點(diǎn)SKIPIF1<0在SKIPIF1<0所在的平面內(nèi),滿(mǎn)足SKIPIF1<0且SKIPIF1<0,則點(diǎn)SKIPIF1<0是SKIPIF1<0的外心.以上命題為假命題的序號(hào)是___________.34.如圖,兩塊斜邊長(zhǎng)相等的直角三角板拼在一起,若SKIPIF1<0,則SKIPIF1<0________.35.已知向量SKIPIF1<0,SKIPIF1<0滿(mǎn)足SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0的最大值是________.36.已知平面向量SKIPIF1<0,SKIPIF1<0的夾角為45°,SKIPIF1<0且SKIPIF1<0,則SKIPIF1<0的最小值是___________.四、解答題37.平面直角坐標(biāo)系xOy中,已知向量SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0.(1)若已知M(1,1),N(y+1,2),y∈[0,2],則求出SKIPIF1<0的范圍;(2)若SKIPIF1<0,求四邊形ABCD的面積.38.在SKIPIF1<0中,角SKIPIF1<0所對(duì)邊分別為SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0為SKIPIF1<0邊上的中線,SKIPIF1<0點(diǎn)在SKIPIF1<0上,滿(mǎn)足SKIPIF1<0.(1)求SKIPIF1<0及線段SKIPIF1<0的長(zhǎng);(2)求SKIPIF1<0的面積.39.已知向量SKIPIF1<0與SKIPIF1<0的夾角為SKIPIF1<0,且SKIPIF1<0,SKIPIF1<0.(1)若向量SKIPIF1<0與SKIPIF1<0共線,求實(shí)數(shù)SKIPIF1<0的值;(2)若向量SKIPIF1<0與SKIPIF1<0的夾角為銳角,求實(shí)數(shù)SKIPIF1<0的取值范圍.40.在等邊SKIPIF1<0中,SKIPIF1<0,點(diǎn)SKIPIF1<0為SKIPIF1<0的中點(diǎn),SKIPIF1<0交SKIPIF1<0于點(diǎn)SKIPIF1<0.(1)證明:點(diǎn)SKIPIF1<0為SKIPIF1<0的中點(diǎn);(2)若SKIPIF1<0,求SKIPIF1<0的面積.任務(wù)三:邪惡模式(困難)1-30題一、單選題1.如圖,在等腰△SKIPIF1<0中,已知SKIPIF1<0分別是邊SKIPIF1<0的點(diǎn),且SKIPIF1<0,其中SKIPIF1<0且SKIPIF1<0,若線段SKIPIF1<0的中點(diǎn)分別為SKIPIF1<0,則SKIPIF1<0的最小值是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.在SKIPIF1<0中,SKIPIF1<0,點(diǎn)SKIPIF1<0在邊SKIPIF1<0上,且SKIPIF1<0,設(shè)SKIPIF1<0,則當(dāng)SKIPIF1<0取最大值時(shí),SKIPIF1<0()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.已知SKIPIF1<0為單位向量,且SKIPIF1<0,若非零向量SKIPIF1<0滿(mǎn)足SKIPIF1<0,則SKIPIF1<0的最大值是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.如圖,在平面四邊形SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,若點(diǎn)F為邊SKIPIF1<0上的動(dòng)點(diǎn),則SKIPIF1<0的最小值為()A.1 B.SKIPIF1<0 C.SKIPIF1<0 D.25.在SKIPIF1<0中,已知SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的面積為6,若SKIPIF1<0為線段SKIPIF1<0上的點(diǎn)(點(diǎn)SKIPIF1<0不與點(diǎn)SKIPIF1<0,點(diǎn)SKIPIF1<0重合),且SKIPIF1<0,則SKIPIF1<0的最小值為().A.9 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.在SKIPIF1<0中,已知SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0為線段SKIPIF1<0上的一點(diǎn),且SKIPIF1<0,則SKIPIF1<0的最小值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.已知O是SKIPIF1<0所在平面上的一點(diǎn),若SKIPIF1<0(其中P是SKIPIF1<0所在平面內(nèi)任意一點(diǎn)),則O點(diǎn)是SKIPIF1<0的()A.外心 B.內(nèi)心 C.重心 D.垂心8.已知向量SKIPIF1<0,SKIPIF1<0,SKIPIF1<0滿(mǎn)足SKIPIF1<0,SKIPIF1<0在SKIPIF1<0方向上的投影為2,SKIPIF1<0,則SKIPIF1<0的最小值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<09.已知SKIPIF1<0的內(nèi)角分別為SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0的內(nèi)切圓面積為SKIPIF1<0,則SKIPIF1<0的最小值為()A.SKIPIF1<0 B.8 C.SKIPIF1<0 D.SKIPIF1<010.如圖,在等腰梯形SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,點(diǎn)SKIPIF1<0,SKIPIF1<0分別為SKIPIF1<0,SKIPIF1<0的中點(diǎn).如果對(duì)于常數(shù)SKIPIF1<0,在等腰梯形SKIPIF1<0的四條邊上,有且只有8個(gè)不同的點(diǎn)SKIPIF1<0使得SKIPIF1<0成立,那么SKIPIF1<0的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<011.已知平面向量SKIPIF1<0,SKIPIF1<0,SKIPIF1<0(SKIPIF1<0與SKIPIF1<0不共線),滿(mǎn)足SKIPIF1<0,SKIPIF1<0,設(shè)SKIPIF1<0,則SKIPIF1<0的取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<012.已知雙曲線SKIPIF1<0:SKIPIF1<0的左、右焦點(diǎn)分別為SKIPIF1<0,SKIPIF1<0,過(guò)點(diǎn)SKIPIF1<0且斜率為SKIPIF1<0的直線與雙曲線在第二象限的交點(diǎn)為SKIPIF1<0,若SKIPIF1<0,則雙曲線SKIPIF1<0的漸近線方程是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<013.半徑為SKIPIF1<0的圓SKIPIF1<0上有三點(diǎn)SKIPIF1<0、SKIPIF1<0、SKIPIF1<0滿(mǎn)足SKIPIF1<0,點(diǎn)SKIPIF1<0是圓內(nèi)一點(diǎn),則SKIPIF1<0的取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<014.已如平面向量SKIPIF1<0、SKIPIF1<0、SKIPIF1<0,滿(mǎn)足SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0的最大值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<015.平面上的兩個(gè)向量SKIPIF1<0和SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0若向量SKIPIF1<0SKIPIF1<0,且SKIPIF1<0,則SKIPIF1<0的最大值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0二、多選題16.對(duì)于給定的SKIPIF1<0,其外心為SKIPIF1<0,重心為SKIPIF1<0,垂心為SKIPIF1<0,則下列結(jié)論正確的是()A.SKIPIF1<0B.SKIPIF1<0C.過(guò)點(diǎn)SKIPIF1<0的直線SKIPIF1<0交SKIPIF1<0于SKIPIF1<0,若SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0D.SKIPIF1<0與SKIPIF1<0共線17.如圖,直角SKIPIF1<0的斜邊BC長(zhǎng)為2,SKIPIF1<0,且點(diǎn)B,C分別在x軸正半軸和y軸正半軸上滑動(dòng),點(diǎn)A在線段BC的右上方則()A.SKIPIF1<0有最大值也有最小值 B.SKIPIF1<0有最大值無(wú)最小值C.SKIPIF1<0有最小值無(wú)最大值 D.SKIPIF1<0無(wú)最大值也無(wú)最小值18.在SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0、SKIPIF1<0的交點(diǎn)為SKIPIF1<0,過(guò)SKIPIF1<0作動(dòng)直線SKIPIF1<0分別交線段SKIPIF1<0、SKIPIF1<0于SKIPIF1<0、SKIPIF1<0兩點(diǎn),若SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0的不可能取到的值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<019.“奔馳定理”是平面向量中一個(gè)非常優(yōu)美的結(jié)論,因?yàn)檫@個(gè)定理對(duì)應(yīng)的圖形與“奔馳”轎車(chē)(Mercedesbenz)的logo很相似,故形象地稱(chēng)其為“奔馳定理”.奔馳定理:已知SKIPIF1<0是SKIPIF1<0內(nèi)的一點(diǎn),SKIPIF1<0、SKIPIF1<0、SKIPIF1<0的面積分別為SKIPIF1<0、SKIPIF1<0、SKIPIF1<0,則SKIPIF1<0.若SKIPIF1<0是銳角SKIPIF1<0內(nèi)的一點(diǎn),SKIPIF1<0、SKIPIF1<0、SKIPIF1<0是SKIPIF1<0的三個(gè)內(nèi)角,且點(diǎn)SKIPIF1<0滿(mǎn)足SKIPIF1<0,則()A.SKIPIF1<0為SKIPIF1<0的垂心B.SKIPIF1<0C.SKIPIF1<0

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