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扇形概念與面積
Author:
Lionheart William
扇形的基本觀念 圓的周長與面積 - 扇形各部位的名稱。 透過拖拉B點來看扇形面積的變化。
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找出對稱軸
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Task 5: Regular Hexagon
呵呵
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Drag me~
DANDELIN
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Logarithmic Functions
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