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風車
Author:
李春培
風車
GeoGebra
New Resources
兩位數除以一位數（一）
直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
兩位數加法
Discover Resources
sin&cos
線性變換矩陣（二階）
圈柱切割
光的折射（光线自右下向左上）
Copy of 茵01
Discover Topics
Cone
Intersection
Conditional Probability
Step Functions
Vectors 3D (Three-Dimensional)