Download Section 1.6-Classify Polygons

Geometry
Section 1.6 - Classify Polygons
Objective: SWBAT classify polygons
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.
Is it a Polygon?
Look at your worksheet…
Is it a Polygon?
Classify polygons by # sides
# sides
3
Name
Triangle
4
Quadrilateral
5
Pentagon
6
Hexagon
7
Heptagon
Picture
Classify polygons by # sides
# sides
8
Name
Octagon
9
Nonagon
10
Decagon
12
Dodecagon
n
n-gon
Picture
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
Identify polygon
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
Classify Polygon
Homework
Textbook Page 45
# 8-14 (even)
# 28 and 30