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Geometry 11.6 2016 Done.notebook 1 February 16, 2016 Feb 1310:38 PM 11.6 Area of Regular Polygons Objective iWBAT: compute area for regular polygons. Feb 1310:57 PM Announcements Test Friday Grades Formula Sheet Pass Back Quizzes Make up Quizzes from Friday

Geometry 11.6 2016 Done.notebook - Moore Public Schools€¦ · m BFG = m AFG = m AGF = m GBF = m GAF = 72 90 36 36 90 54 54 Feb 1311:25 PM Draw the Isosceles Triangle ... SMART Board

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Geometry 11.6 2016 Done.notebook

1

February 16, 2016

Feb 13­10:38 PM

11.6 Area of Regular Polygons

Objective

iWBAT: compute area for regular polygons.

Feb 13­10:57 PM

Announcements

­ Test Friday

­ Grades

­ Formula Sheet

­ Pass Back Quizzes

­ Make up Quizzes from Friday

Geometry 11.6 2016 Done.notebook

2

February 16, 2016

Feb 13­10:33 PM

Bell Work ­ Separate Sheet of Paper

2. What is a "Regular Polygon"?

3. What is a 9 sided polygon called?

1.

Feb 13­10:34 PM

Octagon 8

Geometry 11.6 2016 Done.notebook

3

February 16, 2016

Feb 14­04:29 PM

Feb 13­11:24 PM

P

Q RS

Inscribed Regular Polygon

Radius:

Center:

Apothem:

Central Angle:

Diameter:

Geometry 11.6 2016 Done.notebook

4

February 16, 2016

Feb 14­04:41 PM

m    BFA =

m    BGF =

m    BFG =

m    AFG =

m    AGF =

m    GBF =

m    GAF =

72

90

36

36

90

54

54

Feb 13­11:25 PM

Draw the Isosceles Triangle and find the central angle of...

1. Octagon

2. Heptagon

3. Dodecagon

4. Hexagon

Geometry 11.6 2016 Done.notebook

5

February 16, 2016

Feb 13­10:39 PM

a = apothem

s = side length

LEFT 

RIGHT

Formula Sheet

Feb 13­10:53 PM

Example 1: Regular Octagon

Formula           What we know:

Take Out Isosceles!