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一线三直角模型证全等
Author:
陈宜红
Topic:
Constructions
,
Triangles
GeoGebra
New Resources
三角函数 的副本
第三周作业效果演示
第八周作业2
平行線的判定
科氏力 (Coriolis Force)
Discover Resources
拼貼
遊戲
拋物線5--包絡線法
力的拆解
半角公式R.J. 沃克(R.J. Walker)
Discover Topics
Functions
Sphere
Right Triangles
Matrices
Means