《2016年人教版七年级上册数学课本知识点归纳.pdf》由会员分享,可在线阅读,更多相关《2016年人教版七年级上册数学课本知识点归纳.pdf(7页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、1 人教版七年级上册数学课本知识点归纳第一章有理数(一)正负数1正数:大于 0 的数。2负数:小于 0 的数。30 即不是正数也不是负数。4正数大于 0,负数小于 0,正数大于负数。二有理数1有理数:由整数和分数组成的数。包括:正整数、0、负整数,正分数、负分数。可以写成两个整之比的形式。无理数是不能写成两个整数之比的形式,它写成小数形式,小数点后的数字是无限不循环的。如:2整数:正整数、0、负整数,统称整数。3分数:正分数、负分数。三数轴1数轴:用直线上的点表示数,这条直线叫做数轴。画一条直线,在直线上任取一点表示数0,这个零点叫做原点,规定直线上从原点向右或向上为正方向;选取适当的长度为单
2、位长度,以便在数轴上取点。2数轴的三要素:原点、正方向、单位长度。3相反数:只有符号不同的两个数叫做互为相反数。0 的相反数还是 0。4绝对值:正数的绝对值是它本身,负数的绝对值是它的相反数;0 的绝对值是 0,两个负数,绝对值大的反而小。四有理数的加减法2 1先定符号,再算绝对值。2加法运算法则:同号相加,到相同符号,并把绝对值相加。异号相加,取绝对值大的加数的符号,并用较大的绝对值减去较小的绝对值。互为相反数的两个数相加得 0。一个数同 0 相加减,仍得这个数。3加法交换律:a+b=b+a 两个数相加,交换加数的位置,和不变。4加法结合律:a+b+c=a+b+c 三个数相加,先把前两个数相
3、加,或者先把后两个数相加,和不变。5 a-b=a+-b 减去一个数,等于加这个数的相反数。五有理数乘法先定积的符号,再定积的大小1同号得正,异号得负,并把绝对值相乘。任何数同0 相乘,都得 0。2乘积是 1 的两个数互为倒数。3乘法交换律:ab=b a4乘法结合律:abc=a b c5乘法分配律:ab+c=a b+ac六有理数除法1先将除法化成乘法,然后定符号,最后求结果。2除以一个不等于0 的数,等于乘这个数的倒数。3两数相除,同号得正,异号得负,并把绝对值相除,0 除以任何一个不等于 0 的数,都得 0。七乘方1求 n 个相同因数的积的运算,叫做乘方。写作an。乘方的结果叫幂,a叫底数,n
4、 叫指数文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档
5、编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4
6、F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3
7、O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1
8、I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8
9、I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX
10、9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B63 2负数的奇数次幂是负数,负数的偶次幂是正数;0 的任何正整数次幂都是0。3同底数幂相乘,底不变,指数相加。4同底数幂相除,底不变,指数相减。八有理数的加减乘
11、除混合运算法则1先乘方,再乘除,最后加减。2同级运算,从左到右进行。3如有括号,先做括号内的运算,按小括号、中括号、大括号依次进行。九科学记数法、近似数、有效数字。第二章整式一整式1整式:单项式和多项式的统称叫整式。2单项式:数与字母的乘积组成的式子叫单项式。单独的一个数或一个字母也是单项式。3系数;一个单项式中,数字因数叫做这个单项式的系数。4。次数:一个单项式中,所有字母的指数和叫做这个单项式的次数。5多项式:几个单项式的和叫做多项式。6项:组成多项式的每个单项式叫做多项式的项。7常数项:不含字母的项叫做常数项。8多项式的次数:多项式中,次数最高的项的次数叫做这个多项式的次数。9同类项:多
12、项式中,所含字母相同,并且相同字母的指数也相同的项叫做同类项。文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9
13、HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H
14、6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10
15、 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2
16、N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B
17、6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:
18、CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B64 10合并同类项:把多项式中的同类项合并成一项,叫做合并同类项。(二)整式加减整式加减运算时,如果遇到括
19、号先去括号,再合并同类项。1去括号:一般地,几个整式相加减,如果有括号就先去括号,然后再合并同类项。如果括号外的因数是正数,去括号后原括号内各项的符号与原来的符号相同。如果括号外的因数是负数,去括号后原括号内各项的符号与原来的符号相反。2合并同类项:把多项式中的同类项合并成一项,叫做合并同类项。合并同类项后,所得项的系数是合并前各同类项的系数的和,且字母部分不变第三章一元一次方程分析实际问题中的数量关系,利用其中的相等关系列出方程,是用数学解决实际问题的一种方法。一方程:先设字母表示未知数,然后根据相等关系,写出含有未知数的等式叫方程。二一元一次方程。1一元一次方程:方程里只含有一个未知数元,
20、未知数的次数都是1,这样的方程叫做一元一次方程。2解:求出的方程中未知数的值叫做方程的解。二等式的性质1等式两边加或减同一个数或式子,结果仍相等。如果 a=b,那么 a c=b c文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6
21、文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:C
22、A4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6
23、G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 H
24、L1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6
25、O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10
26、ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N
27、10H1B65 2等式两边乘同一个数,或除以同一个不为0 的数,结果仍相等。如果 a=b,那么 a c=b c;如果 a=b,c?0,那么 a c=b c。三解方程的步骤解一元一次方程的步骤:去分母、去括号、移项、合并同类项,未知数系数化为 1。1去分母:把系数化成整数。2去括号3移项:把等式一边的某项变号后移到另一边。4合并同类项5系数化为 1第四章图形认识初步一、图形认识初步1几何图形:把从实物中抽象出来的各种图形的统称。2平面图形:有些几何图形的各部分都在同一平面内,这样的图形是平面图形。3立体图形:有些几何图形的各部分不都在同一平面内,这样的图形是立体图形。4 展开图:有些立体图形是由
28、一些平面图形围成的,将它们的外表适当剪开,可以展开成平面图形,这样的平面图形称为相应立体图形的展开图。5点,线,面,体图形是由点,线,面构成的。文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 H
29、L1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6
30、O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10
31、ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N
32、10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6
33、文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:C
34、A4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B66 线与线相交得点,面与
35、面相交得线。点动成线,线动成面,面动成体。二、直线、线段、射线1线段:线段有两个端点。2射线:将线段向一个方向无限延长就形成了射线。射线只有一个端点。3直线:将线段的两端无限延长就形成了直线。直线没有端点。4两点确定一条直线:经过两点有一条直线,并且只有一条直线。5相交:两条直线有一个公共点时,称这两条直线相交。6两条直线相交有一个公共点,这个公共点叫交点。7中点:M 点把线段 AB分成相等的两条线段AM 与 MB,点 M 叫做线段 AB的中点。8线段的性质:两点的所有连线中,线段最短。两点之间,线段最短9距离:连接两点间的线段的长度,叫做这两点的距离。三、角1角:有公共端点的两条射线组成的图
36、形叫做角。2角的度量单位:度、分、秒。3角的度量与表示:角由两条具有公共端点的射线组成,两条射线的公共端点是这个角的顶点。一度的 1/60 是一分,一分的 1/60 是一秒。角的度、分、秒是60 进制。4角的比较:角也可以看成是由一条射线绕着他的端点旋转而成的。平角和周角:一条射线绕着他的端点旋转,当终边和始边成一条直线时,文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T
37、6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9
38、HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H
39、6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10
40、 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2
41、N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B
42、6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:
43、CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B67 所成的角叫做平角。始边继续旋转,当他又和始边重合时,所成的角叫做周角。平角等于 180度。周角等于 360 度。直角等于 90 度。平分线:从一个角的顶点引出的一条射线,把这个角分成两个相等的角,这条射线叫做这个角的平分线。工具:量角器、三角尺、经纬仪。5余角和补角余角:两个角的和等于90 度,这两个角互为余角。即其中每一个是另一个角的余角。补角:两个角的和等于180 度,这两个角互为补角。即其中一个是另一个角的补角。补角的性质:等角
44、的补角相等余角的性质:等角的余角相等文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10
45、ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N
46、10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6
47、文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:C
48、A4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6
49、G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6文档编码:CA4F4T6G3O9 HL1I3H6O8I10 ZX9I2N10H1B6
限制150内