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塗色02
Author:
李伶芳
GeoGebra
New Resources
兩位數加法
四邊形的特性
兩組對邊相等的四邊形
判斷球體
球体的体积推导（优化版）
Discover Resources
構成三角形的邊長條件
拋物線4-平行四邊形法
农大
两角和的正切公式几何证明
翰林數學_2下_CH3-1_點線角
Discover Topics
Derivative
Expected Value
Arithmetic Mean
Reflection
Logic