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軌跡教學
Author:
yuchengda
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
拼砌四邊形
異分母分數減法
球体的体积推导（优化版）
兩位數除以一位數（一）
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最小周長
reflectional symmetry_6
三角函數的由來
畢氏定理 (勾股定理) <Pythagorean theorem>
基础知识
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Calculus
Right Triangles
Integral Calculus
Similarity Transformation or Similarity
Pythagoras or Pythagorean Theorem