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海伦公式分步证明
Author:
math Ku
Topic:
Area
,
Similar Triangles
,
Triangles
Prove Heron's Formula
GeoGebra
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GeoGebra笔记功能体验课件
三位數除以一位數(二)
四邊形的特性
球体的体积推导(优化版)
找出對稱軸
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矩形
南女校徽外型
二次函數(第三階段)
二次函数图象与a,m,k关系的副本
正方形中的45度摺紙
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Optimization Problems
Cone
Multiplication
Probability
Frequency Distribution