Both are seven-storey dodecagonal pagodas, one named Dragon Pagoda which has a dragon shaped entrance, and the other Tiger Pagoda, a tiger shaped exit. 两座都是七层高十二角形的宝塔，其中一座称为龙塔 ，有一个龙形入口，另一座称虎塔，有一虎形出口。
Ancient Chinese architecture uses a variety of shapes: the square, rectangle, triangle, hexagon, octagon, dodecagon, cross, circle, and semicircle. 中国古代建筑采用多种不同的外形：正方形、长方形、三角形、六角形、八角形、十二角形、十字形、圆形和半圆形。
Abstract： In this paper, we discuss a new method for camera self- calibration based on a plane pattem of equilateral - dodecagon. 摘 要： 给出一种基于平面模板摄象机自定标的新算法。
Chinese Pagodas had a variety of kinds.Classified by the shape and structure,pagodas are divided into all directions pagodas,hexangular pagodas, eight-square pagodas, dodecagonal Pagodas and so on. 中国佛塔，种类繁多，姿态万千，从建筑形制上看，平面分类就有：四方塔、六角塔、八角塔、十二角塔等等；
This paper uses the idea of matrix circles model which regards the circle as a polygon (at least dodecagon), and connect the polygon edges in different ways to make up the desired filled pattern. 再以此填充模式为基础，去掉某些边则为弧段，半径的不同则可产生曲率不同的弧；
A Plane Pattern of Equilateral - dodecagon Based Camera Self- Calibration 基于正十二边行平面模板的摄象机自标定
