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拋物線2--焦點法
Author:
16楊杰
GeoGebra
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直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
拼砌四邊形
画直线等分三角形的面积
Discover Resources
二次函數
isosceles triangle construction
Conjugate Diameter—共轭直径
Solving Triangles (Ambiguous SSA case)
旋转的线段组成面
Discover Topics
Logic
Multiplication
Trigonometric Functions
Geometric Mean
Arithmetic Operations