Today we look at the formula (n-2)*180° and learning why the formula works for finding angles in a polygon. Finding Angles in a Polygon might seem confusing at first but once you learn that this formula can always be used, and why it is used, the Angles in a Polygon will be very easy to find and you will understand why a particular polygon has a particular sum of angles. Video Chapters 00:25 - intro: Finding TRIANGLES within polygons 02:24 - Triangle 04:52 - Quadrilateral 06:30 - Pentagon 09:11 - Heptagon ( 7 sided polygon) 13:09 - Bonus shape (irregular pentagon, more difficult example)