Copy of opening a cube

作者：Md. Nurul Abrar, Arthur Lee

A cube is divided into 6 congruent right pyramids. Drag the yellow dot to 'close' the cube. This shows the volume of a square base pyramid with height equal to half its base edge.

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Circle Theorem 8
A Rotation and a Reflection
lab #7
Triangle rolls on
day 83

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幾何變換
雙曲線
作圖
參數曲線
定積分

Copy of opening a cube

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