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二次函數01
Author:
luke huang
GeoGebra
New Resources
百分數及其應用
祖冲之的期望：内棋与外棋
龙形曲线-分形龙2
常见四边形是否是双心四边形
科氏力 (Coriolis Force)
Discover Resources
proof ASA
World's Hardest Easy Geometry Problem.
翰林B4習p85_10
ie 6
tool2
Discover Topics
Multiplication
Trigonometry
Unit Circle
Random Experiments
Surface