Making a Rule for Irregular Polygons

In your group, choose three strong observations. Then, make a rule that can be used for all irregular polygons to find the sum of all the angles. 

Are regular polygons the same or different from irregular polygons? 




Casey:


Any polygon will have the circle in the middle subtract out the value of the circle which is 360.


The reason for the # of triangles is to count the # of sides.


The 360 is already include in the whole shape and we don't need it so we subtract.


Rule for regular polygons works for irregular polygons.


Look back to R-43.