11-3 Polygons
Presentation
•
Mathematics
•
7th - 8th Grade
•
Practice Problem
•
Medium
Standards-aligned
Catelyn Cujas
Used 17+ times
FREE Resource
6 Slides • 6 Questions
1
11-3 Polygons
Chapter 11 Lesson 3
2
What is a polygon?
A polygon is a simple, closed figure formed by three or more sides.
Polygons are normally classified by the number of sides they have!
Notice the sides of the polygons are not curved, never overlap, and are ALWAYS closed!
3
Multiple Choice
Using the picture for help, determine whether the figure is a polygon. If it is, classify the polygon. DO NOT CHOOSE THE PICTURE AS YOUR ANSWER!
4
Multiple Choice
Using the picture to help, determine whether the figure is a polygon. If it is, classify the polygon. DO NOT CHOOSE THE PICTURE AS YOUR ANSWER!
5
Interior Angles of a Polygon
The sum of the degree measures of the interior angles of a polygon with n sides is (n - 2)180!
The visual shows the number of diagonals that can be drawn to connect the nonconsecutive vertices in a polygon!
6
Notes Example
Find the sum of the measures of the interior angles of a nonagon.
Using (n - 2)180:
(9-2)180 = 1260 degrees.
7
Multiple Choice
8
Uhhh... Tessellation?
A tessellation is a repetitive pattern of polygons that fit together with no overlaps or holes.
The sum of the measures of the angles where the vertices meet (in the center) is 360 degrees!
9
10
Multiple Choice
11
Multiple Choice
Is the given shape a polygon?
12
Multiple Choice
11-3 Polygons
Chapter 11 Lesson 3
Show answer
Auto Play
Slide 1 / 12
SLIDE
