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畫三角形 題1d
Author:
GeoGebra Institute of Hong Kong
Topic:
Right Triangles
,
Triangles
GeoGebra
New Resources
空间中两直线的位置关系
圓的切線方程
探究三角形的全等條件
球体的体积推导（优化版）
直線的斜率
Discover Resources
正方體摺紙圖樣的旋轉及反射
number line
齒輪作圖
八個方向
学习科学计算器
Discover Topics
Constructions
Algebra
Arithmetic Operations
Hyperbola
Vectors 3D (Three-Dimensional)