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Introduce tangent ratio
Author:
VCChung
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
畫出對稱圖形
第八周作业
柱體建築師
Discover Resources
Addition and Subtraction of Directed Numbers (2) 有向數加減(2)
軌跡,摺紙,滾動,實驗觀察,曲線
proof30黃煒皓
數論淺談: 整數解之奧秘
計算圖形周界（小六下）
幾何板
Discover Topics
Intersection
Correlation
Statistical Characteristics
Trapezoid
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