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三角函數值 (特別角)
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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異分母分數減法
直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
兩位數除以一位數（二）
判斷球體
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底圖為兩函數，截面為正方形
Quiz on Conditions for Congruence of Triangles 全等三角形的判定條件：測驗
BkD_act15_02c
rotational symmetry_3
角度、弧度互換
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Perimeter
Logic
Differential Calculus
Sphere
Pyramid