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正弦余弦刻度尺
Author:
丁银杰
Topic:
Trigonometry
GeoGebra
New Resources
四邉形 (四年級) 教師版
找出對稱軸
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
球体的体积推导（优化版）
Discover Resources
不規則區域著色
Problem1:(md+me+mf)/(ad+be+cf)=a
象限
立體
對稱01
Discover Topics
Quadratic Functions
Hypothesis Testing
Binomial Distribution
Normal Distribution
Vectors