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平行四邊形
Author:
Yip Chi Wai
Topic:
Parallelogram
GeoGebra
New Resources
球体的体积推导（优化版）
兩位數除以一位數（一）
四邉形 (四年級) 教師版
找出對稱軸
三位數除以一位數（一）
Discover Resources
內切圓滾動
HKDSE 3D Figures
模擬3D物件
軌跡觀察---模擬摺紙
泰北2017GGB研習
定积分的概念
Discover Topics
Cuboid
Linear Functions
Tree Diagrams
Circle
Geometric Mean