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翰林數學_2下_CH3-1_三角形的外角定理
Author:
翰林數學
GeoGebra
New Resources
柱體建築師
画直线等分三角形的面积
兩位數除以一位數（一）
異分母分數減法
錐體建築師
Discover Resources
Easter egg
判斷三角形
極座標
Copy of 方格紙上畫四邊形
勝者即正義
Discover Topics
Geometric Transformations
Straight Lines
Optimization Problems
Percentages
Vectors 2D (Two-Dimensional)