Copy of opening a cube

Forfatter丁明智, 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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רישום חופשי
立体几何-公理3及推论
bewijs stelling van Pythagoras
Intersections of y=a^x and y=log(a, x)
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