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二面角的夹角
Author:
chen-sir
Topic:
Solids or 3D Shapes
GeoGebra
New Resources
錐體建築師
画直线等分三角形的面积
拼砌四邊形
柱體建築師
兩位數除以一位數（一）
Discover Resources
Quiz on Factorization of Quadratic Polynomials (Cross Method) 因式分解一元二次多項式(十字相乘法)：測驗
Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
圖C
周界
數學繪圖
Discover Topics
Arithmetic
Fractal Geometry
Exponential Functions
Logarithm
Statistics