文件内容:
file:227树状图求概率.mp4
file:225概率.mp4
file:226列表法求概率.mp4
file:224随机事件.mp4
file:222方差.mp4
file:223统计图的分类.mp4
file:220中位数.mp4
file:221众数.mp4
file:219平均数.mp4
file:218圆锥及展开图形.mp4
file:215正多边形.mp4
file:217扇形面积.mp4
file:214圆与圆的位置关系.mp4
file:212切线.mp4
file:216弧长.mp4
file:213切线长定理.mp4
file:209圆周角.mp4
file:211直线和圆的位置关系.mp4
file:208圆心角、弧、弦.mp4
file:210点和圆的位置关系.mp4
file:207垂径定理.mp4
file:206圆.mp4
file:204解直角三角形.mp4
file:205解直角三角形应用.mp4
file:203特殊角的三角函数值.mp4
file:200正弦.mp4
file:201余弦.mp4
file:202正切.mp4
file:199相似三角形的面积比.mp4
file:198相似三角形的周长比.mp4
file:197相似三角形判定四.mp4
file:196相似三角形判定三.mp4
file:193平行线分线段成比例定理.mp4
file:195相似三角形判定二.mp4
file:192图形的相似.mp4
file:194相似三角形判定一.mp4
file:191关于原点对称的坐标.mp4
file:189中心对称.mp4
file:190中心对称图形.mp4
file:188旋转.mp4
file:187正方形判定.mp4
file:186正方形.mp4
file:184菱形.mp4
file:183矩形判定.mp4
file:185菱形的判定.mp4
file:181矩形.mp4
file:182斜边中线定理.mp4
file:176平行四边形判定一.mp4
file:177平行四边形判定二.mp4
file:178平行四边形判定三.mp4
file:180中位线定理.mp4
file:179平行四边形判定四.mp4
file:175平行四边形对角线互相平分.mp4
file:174平行四边形性质.mp4
file:171勾股定理.mp4
file:172勾股定理逆定理.mp4
file:173原命题与逆命题.mp4
file:170等边三角形.mp4
file:169等角对等边.mp4
file:168等腰三角形.mp4
file:167画轴对称图形.mp4
file:166垂直平分线.mp4
file:165关于直线对称.mp4
file:164轴对称图形.mp4
file:163角平分线推论.mp4
file:162角平分线定理.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
file:159三角形全等判定三ASA.mp4
file:158三角形全等判定二SAS.mp4
file:157三角形全等判定一SSS.mp4
file:156全家三角形.mp4
file:155多边形外角和.mp4
file:154多边形内角和.mp4
file:153三角形的外角.mp4
file:152三角形的内角.mp4
file:150角平分线.mp4
file:151三角形稳定性.mp4
file:148高.mp4
file:149中线.mp4
file:147三角形三边关系.mp4
file:146三角形的分类.mp4
file:145什么是三角形.mp4
file:144平行线判定方法六（同旁内角互补两直线平行）.mp4
file:143平行线判定方法五（内错角相等两直线平行）.mp4
file:141平行线判定方法三（同旁内角）.mp4
file:142平行线判定方法四（同位角相等两直线平行）.mp4
file:140平行线判定方法二（内错角）.mp4
file:139平行线判定方法一（同位角）.mp4
file:138平行线.mp4
file:136垂直、垂足.mp4
file:137垂线段最短.mp4
file:135对顶角.mp4
file:134邻补角.mp4
file:133相交线.mp4
file:131补角.mp4
file:132方位角.mp4
file:129角的大小比较.mp4
file:128角的运算.mp4
file:130余角.mp4
file:127角.mp4
file:126直线、射线、线段.mp4
file:125点、线、面、体.mp4
file:124平面展开图.mp4
file:123什么是几何图形.mp4
folder:初中全套数学 (227节)
folder:28.概率初步
folder:27.数据的分析
folder:26.圆
folder:25.锐角三角函数
folder:24.相似
folder:23.旋转
folder:22.平行四边形
folder:21.勾股定理
folder:20.轴对称
folder:19.全等三角形
folder:18.三角形
folder:17.相交线与平行线
folder:16.几何图形初步认识
folder:15.反比例函数
folder:14.二次函数
folder:13.一次函数
folder:12.平面直角坐标系
folder:11.等式与不等式组
folder:10.一元二次方程
folder:09.分式方程
folder:08.二元一次方程
folder:07.一元一次方程
folder:06.二次根式
folder:05.分式
folder:04.整式的乘法与因式分解
folder:03.实数
folder:02.整式
folder:01.有理数