1. Section 1.6 - Classify Polygons Objective: SWBAT classify polygons
Geometry
Section Classify Polygons
Objective: SWBAT classify polygons

2. Introduction to Polygons
What is a polygon?
Is a closed plane figure with the following properties:
1. It is formed by three or more line segments called sides
2. Each side intersects exactly two sides, one at each endpoint, so that no two sides with a common endpoint are collinear.

3. Is it a Polygon?
Look at your worksheet… Is it a Polygon?

4. Classify polygons by # sides
Name
Picture 3 4 5 6 7
Triangle
Quadrilateral
Pentagon
Hexagon
Heptagon

5. Classify polygons by # sides
Name
Picture 8 9 10 12 n
Octagon
Nonagon
Decagon
Dodecagon
n-gon

6. Classifying Polygons
Convex: a polygon such that no line containing a side of the polygon contains a point in the interior of the polygon
Concave: a polygon that is not convex

7. Identify polygon

8. Classifying Polygons Equilateral: a polygon with all sides congruent
Equiangular: a polygon with all interior angles congruent.
Regular: a convex polygon that is both equilateral and equiangular

9. Classify Polygon

10. Homework
Textbook Page 45 # 8-14 (even) # 28 and 30