sidedifferent
Sidedifferent is a roughly informal mathematical term used to describe a polygon in which no two sides have the same length. It is not standard terminology, and many texts refer to the same idea via scalene or irregular polygons. In triangles, a sidedifferent triangle is what most would call a scalene triangle: all three side lengths are different. For polygons with four or more sides, a polygon with pairwise unequal side lengths is sometimes called a sidedifferent polygon, though the more common label is simply a scalene polygon, or an irregular polygon when angle measures vary.
The main characteristic is the absence of equal-length sides. This generally implies minimal or no symmetry;
Construction and existence: To form a simple polygon with specified distinct side lengths, a necessary condition
Relationship to symmetry and angles: No requirement on interior angles; some may be acute, obtuse, or right,