What is an a characteristic of a figure such as side and angle measures?

A characteristic of a geometric figure, such as side and angle measures, helps define its shape and properties. For example, the lengths of the sides and the measures of the angles determine whether a figure is a triangle, quadrilateral, or another polygon. These measurements also play a crucial role in classifying figures (e.g., isosceles, equilateral) and determining their congruence or similarity to other figures.