Nonahedron
01
九面体, 九边形
a shape with nine flat sides that connect along their edges
例子
The nonahedron has nine faces, eighteen edges, and twelve vertices.
九面体有九个面、十八个边和十二个顶点。
I struggled to visualize the nonahedron in my geometry class.
我在几何课上很难想象出九面体。
