经过八角形的中心画两条直线，能够得到六个一样的三角形。

Six identical triangles can be formed by drawing two straight lines through an octagon's center point.

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平版印刷的八角形的图标条纹，向下前。

Litho-printed octagon icon stripe down front.

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这个房间是八角形的。

The room is octagonal.

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I've shown the differences here in terms of shape, these are shaped liked octagons and these are shaped like squares, but if I looked at these cells, what would I find that's really different about them?

我展示了一些细胞形态上的差异,这些细胞是八角形的,这些是方形的,但如果仔细观察这些细胞,我能找到一些本质上的差异吗

耶鲁公开课 - 生物医学工程探索课程节选