Finding an Exterior Angle in a Polygon

Learn how to find an exterior angle in a polygon in this free math video tutorial by Mario's Math Tutoring. We go through 2 examples one regular and one irregular polygon.

0:12 Example 1 Find the Exterior Angle of the Polygon
0:23 What the Exterior Angles Sum To
1:27 Example 2 What is the Exterior Angle in a Regular Octagon
1:32 What is a Regular Polygon
1:39 Formula for Finding One of the Exterior Angles in a Regular Polygon

Related Videos:

Finding an Interior Angles in Polygons

Polygons Finding Number of Sides

Finding Interior and Exterior Angles in a Polygon

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[UnoSapphire]

Had to watch this last second in my exams and got full marks in this chapter I give all credit to you!

[xno]

You are awesome. I understood this faster than a 1hr 25-minute math class.

[justpat]

Had to watch this in the middle of class to solve some problems. The video was really clear and simple. Thanks!

[rikaav]

Thank you so much for that second problem, I couldn't find anyone explaining how to do it :))

[kindleykein]

1 day away before a test of mine, and you saved me. Thanks.

[waltertalbot]

Yes my homework is done thanks you're a good teacher.

[mdshahjahan]

20 days later is my exam and i needed a quick help!
Thank you sir!
Thank you so much from the core of my heart!

[kevinduliesco]

Have you made a vid about no given no numbers given but it has the x things with 2x thing.for exterior.

[trigger-gud]

Thanks, just doing some revision for a important test so thanks so much it reallly helpd

[shamanbharadwaj]

Amazing thank you so much my math teachers real bad at explaining

[IanBoardgame]

thanks your war better than my teacher

[graciee]

What about a shape with 4 sides? What does that add up to?

[mysucc]

This was exactly what I needed, thank you!

[riship]

Thank you soo much this helped me alot

[dineshjha]

Thank you so much I appreciate your help

[mylarein]

How can you find one exterior angle measure of a regular polygon when all you know is one interior angle?

(For my problem, 155 is the interior angle measure)
Thanks!!

[QuietLycoris]

What if for example you have 2 X's in example 1?

[melissascheibel]

What if the angles are not given? And you have to find all the angles??

[lucasbarnett]

Mine doesnt add up to 360 it adds up to 540

[PHILIPPINES]

we just gon ignore the fact he used a calculator