Area of a regular octagon
This presentation is the property of its rightful owner.
Sponsored Links
1 / 7

Area of a Regular Octagon PowerPoint PPT Presentation


  • 57 Views
  • Uploaded on
  • Presentation posted in: General

Area of a Regular Octagon. By Carson Dial. Now, for the basics. T his is a regular octagon, an 8-sided figure whose sides are congruent. The small lines on the edges indicate the congruency of said edges . Now, we can begin….

Download Presentation

Area of a Regular Octagon

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Area of a regular octagon

Area of a Regular Octagon

By Carson Dial


Area of a regular octagon

Now, for the basics

This is a regular octagon, an 8-sided figure whose sides are congruent.

The small lines on the edges indicate the

congruency of said edges.


Area of a regular octagon

Now, we can begin…

First, there is no way to find the area of an octagon by itself, you must divide the octagon into equilateral triangles, eight of them.


Area of a regular octagon

Continuing on now…

We need to find the area of a single equilateral triangle.

So we’ll say the length of

this triangle’s base is 5

units.

5


Area of a regular octagon

Next up…

We’ll need the height of this triangle,

so for convenience's sake, we’ll call it 6.5 units.

6.5

5


Area of a regular octagon

Now, to work this through…

The equation looks something like this

B*h/2 or,

Base times height divided by 2

So, we’ll substitute our numbers in…

5*6.5/2

6.5

5

6.5

* 5

= 32.5 / 2= 16.25

So, the area of this triangle is 16.25 units.


Area of a regular octagon

Up next, the full area…

Now, we will multiply the area of the triangle by eight to find the area of the octagon.

  • 16.25

  • 8

  • --------

  • 132


  • Login