如圖.在直角坐標(biāo)系中.ㄓABO的頂點(diǎn)A.B.O的坐標(biāo)分別為.點(diǎn)列P1.P2.P3.-中的相鄰兩點(diǎn)都關(guān)于ㄓABO的一個(gè)頂點(diǎn)對(duì)稱(chēng):點(diǎn)P1與點(diǎn)P2關(guān)于點(diǎn)A對(duì)稱(chēng).點(diǎn)P2與點(diǎn)P3關(guān)于點(diǎn)B對(duì)稱(chēng).點(diǎn)P3與P4關(guān)于點(diǎn)O對(duì)稱(chēng).點(diǎn)P4與點(diǎn)P5關(guān)于點(diǎn)A對(duì)稱(chēng).點(diǎn)P5與點(diǎn)P6關(guān)于點(diǎn)B對(duì)稱(chēng).點(diǎn)P6與點(diǎn)P7關(guān)于點(diǎn)O對(duì)稱(chēng).-.對(duì)稱(chēng)中心分別是A.B.O.A.B.O.-.且這些對(duì)稱(chēng)中心依次循環(huán).已知點(diǎn)P1的坐標(biāo)是(1.1).試求出點(diǎn)P2.P7.P100的坐標(biāo). 查看更多

 

題目列表(包括答案和解析)

25、如果將點(diǎn)P繞定點(diǎn)M旋轉(zhuǎn)180°后與點(diǎn)Q重合,那么稱(chēng)點(diǎn)P與點(diǎn)Q關(guān)于點(diǎn)M對(duì)稱(chēng),定點(diǎn)M叫做對(duì)稱(chēng)中心.此時(shí),M是線(xiàn)段PQ的中點(diǎn).如圖,在直角坐標(biāo)系中,△ABO的頂點(diǎn)A,B,O的坐標(biāo)分別為(1,0),(0,1),(0,0).點(diǎn)列P1,P2,P3,…中的相鄰兩點(diǎn)都關(guān)于△ABO的一個(gè)頂點(diǎn)對(duì)稱(chēng):點(diǎn)P1與點(diǎn)P2關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P2與點(diǎn)P3關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P3與點(diǎn)P4關(guān)于點(diǎn)O對(duì)稱(chēng),點(diǎn)P4與點(diǎn)P5關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P5與點(diǎn)P6關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P6與點(diǎn)P7關(guān)于點(diǎn)O對(duì)稱(chēng)…對(duì)稱(chēng)中心分別是A,B,O,A,B,O,…,且這些對(duì)稱(chēng)中心依次循環(huán).已知點(diǎn)P1的坐標(biāo)是(1,1),試求出點(diǎn)P2,P7,P100的坐標(biāo).

查看答案和解析>>

16、如圖,在直角坐標(biāo)系中,△ABO的頂點(diǎn)A、B、O的坐標(biāo)分別為(1,0)、(0,1)、(0,0),點(diǎn)列P1、P2、P3、…中的相鄰兩點(diǎn)都關(guān)于△ABO的一個(gè)頂點(diǎn)對(duì)稱(chēng),點(diǎn)P1與點(diǎn)P2關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P2與點(diǎn)P3關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P3與點(diǎn)P4關(guān)于點(diǎn)O對(duì)稱(chēng),點(diǎn)P4與點(diǎn)P5關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P5與點(diǎn)P6關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P6與點(diǎn)P7關(guān)于點(diǎn)O對(duì)稱(chēng),…,且這些對(duì)稱(chēng)中心依次循環(huán),已知點(diǎn)P1的坐標(biāo)是(1,1),那么點(diǎn)P2008的坐標(biāo)為
(1,-3)

查看答案和解析>>

如圖,在直角坐標(biāo)系中,△ABO的頂點(diǎn)A,B,O的坐標(biāo)分別為(1,0)(0,1),(0,0),點(diǎn)列P1,P2,P3,P4,…中的相鄰兩點(diǎn)都關(guān)于△ABO的一個(gè)頂點(diǎn)對(duì)稱(chēng).點(diǎn)P1與點(diǎn)P2關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P2與P3點(diǎn)關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P3與點(diǎn)P4關(guān)于點(diǎn)O對(duì)稱(chēng),點(diǎn)P4與點(diǎn)P5關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P5與點(diǎn)P6關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P6與點(diǎn)P7關(guān)于點(diǎn)O對(duì)稱(chēng)…對(duì)稱(chēng)中心分別是A,B,O,A,B,O,…,且這對(duì)稱(chēng)中心依次循環(huán).已知P1的坐標(biāo)是(1,1),試寫(xiě)出點(diǎn)P2,P7,P100的坐標(biāo).

查看答案和解析>>

18、如果將點(diǎn)P繞定點(diǎn)M旋轉(zhuǎn)180°后與點(diǎn)Q重合,那么點(diǎn)P與點(diǎn)Q關(guān)于點(diǎn)M對(duì)稱(chēng),定點(diǎn)M叫對(duì)稱(chēng)中心,此時(shí),點(diǎn)M是線(xiàn)段PQ的中點(diǎn).如圖,在直角坐標(biāo)系中,△ABO的頂點(diǎn)A、B、O的坐標(biāo)分別為(1,0)、(0,1)、(0,0),點(diǎn)列P1、P2、P3、…中的相鄰兩點(diǎn)都關(guān)于△ABO的一個(gè)頂點(diǎn)對(duì)稱(chēng),點(diǎn)P1與點(diǎn)P2關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P2與點(diǎn)P3關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P3與點(diǎn)P4關(guān)于點(diǎn)O對(duì)稱(chēng),點(diǎn)P4與點(diǎn)P5關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P5與點(diǎn)P6關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P6與點(diǎn)P7關(guān)于點(diǎn)O對(duì)稱(chēng),…,且這些對(duì)稱(chēng)中心依次循環(huán),已知P1的坐標(biāo)是(1,1),點(diǎn)P100的坐標(biāo)為
(1,-3)

查看答案和解析>>

(2005•南京)如果將點(diǎn)P繞定點(diǎn)M旋轉(zhuǎn)180°后與點(diǎn)Q重合,那么稱(chēng)點(diǎn)P與點(diǎn)Q關(guān)于點(diǎn)M對(duì)稱(chēng),定點(diǎn)M叫做對(duì)稱(chēng)中心.此時(shí),M是線(xiàn)段PQ的中點(diǎn).如圖,在直角坐標(biāo)系中,△ABO的頂點(diǎn)A,B,O的坐標(biāo)分別為(1,0),(0,1),(0,0).點(diǎn)列P1,P2,P3,…中的相鄰兩點(diǎn)都關(guān)于△ABO的一個(gè)頂點(diǎn)對(duì)稱(chēng):點(diǎn)P1與點(diǎn)P2關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P2與點(diǎn)P3關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P3與點(diǎn)P4關(guān)于點(diǎn)O對(duì)稱(chēng),點(diǎn)P4與點(diǎn)P5關(guān)于點(diǎn)A對(duì)稱(chēng),點(diǎn)P5與點(diǎn)P6關(guān)于點(diǎn)B對(duì)稱(chēng),點(diǎn)P6與點(diǎn)P7關(guān)于點(diǎn)O對(duì)稱(chēng)…對(duì)稱(chēng)中心分別是A,B,O,A,B,O,…,且這些對(duì)稱(chēng)中心依次循環(huán).已知點(diǎn)P1的坐標(biāo)是(1,1),那么P2的坐標(biāo)是
(1,-1)
(1,-1)
,P7的坐標(biāo)是
(1,1)
(1,1)
,P100的坐標(biāo)是
(1,-3)
(1,-3)

查看答案和解析>>


同步練習(xí)冊(cè)答案