It requires a basic familiarity with geometric shapes, but most concepts (What ... circles with radii equal to the length of a given line segment, and centered on either end of that segment ...

My first idea is to split each line at each intersection point so that each line segment can be shared by at most two polygons. Once that's done, I can create a graph of the line segments and ...

A 125-page proof posted to arXiv may represent a huge breakthrough in geometric measure theory ... How much area does it take up when you rotate a line segment 360 degrees? Two mathematicians ...