Regular Polygon Angles.notebook

Regular Polygon Angles.notebook
November 12, 2015
Intro to Geom for Thursday 11/12/15
1) hand back papers
2) lesson notes #53N Regular Polygons
angles and charts
3) you will have a memory quiz over the
formulas next Monday!!
4) Assign #53A worksheet
Regular Polygon Angles.notebook
November 12, 2015
Fill in the chart with the formula.
Name
Formula
Sum of Int <'s
180(n­2)
Sum of Ext <'s
360
180(n­2)
Each Int <
Each Ext <
n
360
n
Each int < +
linear pair
each ext <
supplementary
Regular Polygon Angles.notebook
a) classify the polygon
November 12, 2015
__________
___________
___________
Regular Polygon Angles.notebook
ex 1 Find each int < of a regular polygon with 18 sides.
Find sum of int <'s and each
ext <.
November 12, 2015
Regular Polygon Angles.notebook
November 12, 2015
ex 2 Find each int < of a regular decagon.
Find sum of int <'s and each
ext <.
Regular Polygon Angles.notebook
November 12, 2015
ex 3 Find each int < of a regular pentagon.
Find sum of int <'s and each
ext <.
Regular Polygon Angles.notebook
November 12, 2015
ex 4 Find each int < of a regular octagon.
Find sum of int <'s and each
ext <.
Regular Polygon Angles.notebook
November 12, 2015
ex 5 Find each int < of a regular 20­gon
22­gon
Find sum of int <'s and each
ext <.
Regular Polygon Angles.notebook
November 12, 2015
Regular Polygon Angles.notebook
November 12, 2015
Regular Polygon Angles.notebook
November 12, 2015
Regular Polygon Angles.notebook
108o
November 12, 2015
72o
Regular Polygon Angles.notebook
November 12, 2015