文件内容:
file:182斜边中线定理.mp4
file:185菱形的判定.mp4
file:175平行四边形对角线互相平分.mp4
file:184菱形.mp4
file:179平行四边形判定四.mp4
file:178平行四边形判定三.mp4
file:183矩形判定.mp4
file:177平行四边形判定二.mp4
file:186正方形.mp4
file:181矩形.mp4
file:176平行四边形判定一.mp4
file:174平行四边形性质.mp4
file:187正方形判定.mp4
file:180中位线定理.mp4
file:16乘除混合运算.mp4
file:8加法交换律.mp4
file:14乘法分配律.mp4
file:9加法结合律.mp4
file:3数轴.mp4
file:15有理数的除法.mp4
file:4相反数.mp4
file:20近似数.mp4
file:2有理数.mp4
file:11有理数乘法法则.mp4
file:7有理数加法.mp4
file:5绝对值.mp4
file:12乘法交换律.mp4
file:18有理数的混合运算.mp4
file:1正数和负数.mp4
file:10有理数减法.mp4
file:6有理数的大小比较.mp4
file:13乘法结合律.mp4
file:19科学计数法.mp4
file:17有理数的乘方.mp4
file:201余弦.mp4
file:205解直角三角形应用.mp4
file:204解直角三角形.mp4
file:200正弦.mp4
file:202正切.mp4
file:203特殊角的三角函数值.mp4
file:221众数.mp4
file:219平均数.mp4
file:222方差.mp4
file:223统计图的分类.mp4
file:220中位数.mp4
file:173原命题与逆命题.mp4
file:172勾股定理逆定理.mp4
file:171勾股定理.mp4
file:27算数平方根.mp4
file:28平方根.mp4
file:30实数的分类.mp4
file:29立方根.mp4
file:76解分式方程.mp4
file:77分式方程的实际应用.mp4
file:75什么是分式方程.mp4
file:99用坐标表示平移-图形.mp4
file:94有序数对.mp4
file:96象限.mp4
file:95平面直角坐标系.mp4
file:98用坐标表示平移-点.mp4
file:97用坐标表示位置.mp4
file:58二次根式加减法.mp4
file:55二次根式乘法法则.mp4
file:54二次根式的概念.mp4
file:56二次根式除法法则.mp4
file:57最简二次根式.mp4
file:133相交线.mp4
file:139平行线判定方法一（同位角）.mp4
file:144平行线判定方法六（同旁内角互补两直线平行）.mp4
file:142平行线判定方法四（同位角相等两直线平行）.mp4
file:134邻补角.mp4
file:135对顶角.mp4
file:143平行线判定方法五（内错角相等两直线平行）.mp4
file:137垂线段最短.mp4
file:136垂直、垂足.mp4
file:141平行线判定方法三（同旁内角）.mp4
file:138平行线.mp4
file:140平行线判定方法二（内错角）.mp4
file:218圆锥及展开图形.mp4
file:211直线和圆的位置关系.mp4
file:209圆周角.mp4
file:208圆心角、弧、弦.mp4
file:214圆与圆的位置关系.mp4
file:210点和圆的位置关系.mp4
file:217扇形面积.mp4
file:215正多边形.mp4
file:213切线长定理.mp4
file:216弧长.mp4
file:212切线.mp4
file:206圆.mp4
file:207垂径定理.mp4
file:62等式的性质（同加同减）.mp4
file:61什么是方程的解？.mp4
file:66一元一次方程应用题.mp4
file:59什么是方程？.mp4
file:65去括号法则与去分母解方程.mp4
file:60什么是一元一次方程？.mp4
file:64利用合并同类项与移项解方程.mp4
file:63等式的性质（同乘同除）.mp4
file:163角平分线推论.mp4
file:158三角形全等判定二SAS.mp4
file:159三角形全等判定三ASA.mp4
file:162角平分线定理.mp4
file:156全家三角形.mp4
file:157三角形全等判定一SSS.mp4
file:161三角形全等判定五HL.mp4
file:160三角形全等判定四AAS.mp4
folder:初中全套数学视频课 (227节)
folder:22.平行四边形
folder:01.有理数
folder:25.锐角三角函数
folder:27.数据的分析
folder:21.勾股定理
folder:03.实数
folder:09.分式方程
folder:12.平面直角坐标系
folder:06.二次根式
folder:17.相交线与平行线
folder:26.圆
folder:07.一元一次方程
folder:19.全等三角形
folder:10.一元二次方程
folder:23.旋转
folder:14.二次函数
folder:15.反比例函数
folder:24.相似
folder:28.概率初步
folder:20.轴对称
folder:11.等式与不等式组
folder:13.一次函数
folder:18.三角形
folder:05.分式
folder:02.整式
folder:04.整式的乘法与因式分解
folder:08.二元一次方程
folder:16.几何图形初步认识