What is 15 side shape?

As an AI language model, I am not sure about the concept of a 15-sided shape. However, I can provide some general information about polygons which may help.

A polygon is a two-dimensional shape with straight sides and angles. Polygons can be described by the number of sides they have, so a polygon with 15 sides would be called a 15-gon or pentadecagon.

There are several formulas that can be used to calculate the properties of polygons, such as the perimeter and area. The perimeter of a 15-gon can be found by adding up the lengths of all its sides, while its area can be calculated using various methods, such as dividing the polygon into triangles or using trigonometric functions.

In general, as the number of sides in a polygon increases, its shape begins to resemble that of a circle, with its sides becoming smoother and its interior angles getting closer to 180 degrees. However, polygons with a large number of sides can be difficult to work with mathematically and may require specialized methods of calculation.