Category Archives: analytic geometry

Finding the Area of an Irregular Polygon

Finding the area of an irregular polygon via geometry can be a bit of a chore, as the process depends heavily on the shape of the polygon.  It turns out, however, that there’s a formula that can give you the … Continue reading

Posted in analytic geometry, calculus, Green's Theorem | 1 Comment

How Do You Tell Whether Two Lines Intersect in 3D?

How do you tell whether two three-dimensional lines intersect?  My colleague Greg Elliott in physics asked me this recently.  He understood how the usual method works, but he wanted to know whether there was a more clever method.  In this … Continue reading

Posted in analytic geometry, vectors | 2 Comments