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Introduce Tangent Ratio
Author:
VCChung
GeoGebra
New Resources
球體建築師
異分母分數減法
畫出對稱圖形
兩位數除以一位數（二）
兩組對邊相等的四邊形
Discover Resources
Construct a regular pentagon
讀量杯上的刻度
第一冊
畢氏定理
圆与圆的位置关系
Discover Topics
Perimeter
Fractal Geometry
Fractions
Indefinite Integral
Cylinder