GeoGebra
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扇形面積
Author:
madeleineleung0928
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机电2班傅怀恩
地球5
动点练习6
迭代1
possion
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Trigonometric Ratios: Cosine & Tangent 三角比：餘弦和正切
三角形垂心
未命名
-1/8 ≤ cosα cosβ cosγ ≤ 1
拋物線5-包絡線法
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Ellipse
Statistics
Polygons
Standard Deviation
Solids or 3D Shapes
