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中点轨迹
Author:
DongHai Zhang
中点轨迹
GeoGebra
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異分母分數減法
四邊形的特性
兩組對邊相等和有直角的四邊形
【案例】圆柱体内放置一个大球六个小球
畫出對稱圖形
Discover Resources
Trigonometric Ratios: Sine 三角比：正弦
立方体截面
正五角錐(旋轉，實體、透視)
投擲兩粒骰子的可能結果
练习
Discover Topics
Vectors 3D (Three-Dimensional)
Standard Deviation
Ellipse
Sphere
Cuboid