n.七角形；七边形
The pagoda has a foundation of heptagon. 这座宝塔有个七边形的底座。
There is a heptagon seat beneath the pagoda. 2.
This pagoda has a foundation which is in a shape of heptagon. 这座宝塔有个七边形的底座。
It is noted that novel patterns of pentagon and heptagon are formed in some special parameters. 其中五边形与七边形的图案更是奇特。
One of them puts out several print fine heptagon shape design from the wallet to paste the sign to give me and the companion. 其中一人从皮夹中拿出几张印制精美的七角形图案贴标送给我和同伴。
