New posts in Polygons

Can a parallelogram have whole-number lengths for all four sides and both diagonals?

What is a simple (or not) way of finding the lengths of the diagonals of this rhombus?

Area of a circle inscribed in a polygon

Polygon-in-polygon testing

Problem on diagonals in a polygon

Midpoint polygons?

Calculating the scale factor to resize a polygon to a specific size

Constructing the 11-gon by splitting an angle in five

Constructibility of the 17-gon

Can a polygon be one dimensional?