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bkb-切割线定理
Author:
梁航宇
GeoGebra
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兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
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彩虹理髮
M05E Rate of Change
高长乐
Sonia and Julie
利用頂點描述二次函數 的複本
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Equilateral Triangles
Fractions
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Random Variables
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