In data processing , several data file format exported from measuring system has been analysis in detail , and some research has been made in these file - formats , and some try was made also . the decision standard of a thin and long triangle was discussed . besides the minimum angle of a triangle , there also the no - equlangularity and the ratio of radius of inscribed circle and circumcircle of a triangle 比如利用vc6 . 0开发了程序，可以计算三角片的法矢量、三角片的一些特征信息，以及狭长三角形的判断，特别是分析了除最小角之外的两个判断标准：外接圆和内切圆半径之比值r r ，以及三角形的不等边度e ，及它们与最小角之间的一致关系。
2.
One of the stars shall be bigger than the others , with its circumcircle s diameter being 310ths of the height of the flag , and shall be placed in the left ; the four other stars shall be smaller , with their circumcircle s diameter being 110th of the height of the flag , encircling the big star on its right in the shape of an arc 旗面为红色，长方形，其长与高为三与二之比，旗面左上方缀黄色五角星五颗。一星较大，其外接圆直径为旗高十分之三，居左；四星较小，其外接圆直径为旗高十分之一，环拱于大星之右。
