Activity 9
These are polygons.

a. Write a definition for polygon.
b. What can you say in general about the sum of the measures of the interior angles of a polygon? Why?
c. What can you say in general about the sum of the measures of the exterior angles of a polygon? Why?
d. Classify polygons into groups, and name each group.
(Write your answers here, on the next page, or on the blank sheets in the Workbook section) Activity 9 (continued)
In your group agree on definitions and properties from the previous page. You can write what you all agree on here, or on the blank sheets in the Workbook section.



Try to explain why the properties you noticed are the way they are.











We will discuss your definitions, properties and explanations as a class.
After the class discussion record the agreed upon definitions in your Notebook, under Definitions. Record properties everyone agrees about, but which no one can explain, under Postulates. Record properties which have been explained under Theorems.