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等分象限角
Author:
郑飞宇
Topic:
Trigonometric Functions
GeoGebra
New Resources
垂直線的斜率
撒针估算面积实验
探究三角形的全等條件
祖冲之的期望：内棋与外棋
百分數及其應用
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軌跡三︰移動點與一固定線段保持固定距離(運動場跑道)
多項式函數
Copy of area
动态演示面动成体：圆柱、圆锥、圆台、球
盈利與虧蝕
Discover Topics
Dilation
Symmetry
Square
Percentages
Cosine