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保持2:3:4
Author:
hjyanghj
Topic:
Geometry
GeoGebra
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兩位數除以一位數（一）
算柱 (兩位數)
兩組對邊相等的四邊形
找出對稱軸
GeoGebra笔记功能体验课件
Discover Resources
相似三角形證明
GeoGebra Book
分數比較
雙曲線3-等軸法
平面直角坐标系的构成
Discover Topics
Logarithm
Logic
Addition
Similar Triangles
Rectangle