Of or pertaining to the study of the measurement, properties, and relationships of quantities and sets, using numbers and symbols.
10类别 25129词条
A chord that contains the center of a circle. It passes through the center of a circle.
反射反射对称图形中的线条。
To divide a polygon into triangles.
请参阅设置为 null。
长度相等。
等边三角形是一个在其中它三面都是长度相等的三角形。
一组点。
