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平行線法
Author:
CIY
GeoGebra
New Resources
異分母分數減法
画直线等分三角形的面积
三位數除以一位數（一）
四邉形 (四年級) 教師版
算柱 (兩位數)
Discover Resources
不規則區域著色
Locus: Equidistance From Two Intersecting Lines
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
文繞圖2
无理数指数幂
Discover Topics
Tangent Function
Logarithmic Functions
Fractal Geometry
Rectangle
Surface