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弦心距垂直平分弦
Author:
謝易達
GeoGebra
New Resources
柱體建築師
拼砌四邊形
画直线等分三角形的面积
三位數除以一位數（一）
異分母分數減法
Discover Resources
onemove
畢式定理 (03)
旋轉橢圓
活工(二)Q3
"拈" 類遊戲之一-搶21遊戲 The 21 game
Discover Topics
Hyperbola
Subtraction
Sine
Similar Triangles
Quadrilaterals