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劉德晧proof14
Author:
郭亮偉
GeoGebra
New Resources
兩位數加法
算柱 (兩位數)
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
Discover Resources
Key stage 1
过圆上一点作切线，三步
MFS: Rebound 1
異側AP-BP最大值
「相似三角形」任务3的副本
Discover Topics
Symmetry
Functions
Fractal Geometry
Circle
Vectors 3D (Three-Dimensional)