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Author:
Cheung Kun
GeoGebra
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直角坐標平面上的旋轉變換
GeoGebra笔记功能体验课件
畫出對稱圖形
兩組對邊相等和有直角的四邊形
兩位數加法
Discover Resources
HKDSE 3D Figures
模擬3D物件
Scheimpflug image
HW question locus 5
小球弹射
半圆面积的微积分动态演示.许兴华数学
Discover Topics
Reflection
Integers
Scalene Triangles
Congruence
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