dome 3

Ribs connect the midpoints of all sides with the corners of the opposite side. The intersection points of these ribs create the base for an octogonal dome.

In the applet below you can see how such a configuration looks like in 3D.

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畫三角形
Forming Similar Triangles
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Question 6c

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SierpinskiCarpet
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MT3-01-P2a-CYU1

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