I’ve been asked more than once how I come up with my topics. Things just pop up in my thoughts and some stay there longer than others. Those are the ...

The shortest distance between two points is a straight line. This is one of the basic principles of Euclidean geometry. But we live on a spherical Earth, so we cannot travel the straight line path ...

Geometry: Circles and Polygons covers the specifics of geometry involving circles and polygons with any number of sides. The class includes a discussion on the internal angles of a circle as well as ...

Our world is filled with shapes and symbols that form familiar elements. One of those common geometric symbols is the circle. The circle plays a pivotal role in everyday life as tires on the cars we ...