Continuing tangent theorems we come to the alternate segment theorem, sometimes mistakingly called the “windsurfer theorem”, due to the picture resembling a windsurfer!!!!

The key to using this theorem is to look for a tangent and a triangle.

lesson notes:  06-tangent-theorems-2

audio: 06 tangent theorems 2

slidecast:

Starting with the basic assumption that a tangent is perpendicular to the radius, we build to create some tangent theorems.

lesson notes: 05-tangent-theorems-1

audio: 05 tangent theorems 1

slidecast: