Find Area of regular polygon with Perimeter and Apothem

An explanation of apothems, how to identify them, and how to quickly find the area of a regular polygon by using the formula which utilizes the perimeter and apothem.

High School Geometry 10.2c, Area of Regular Polygons with the Apothem

Surface Area of Triangle Pyramid, Finding the Apothem

FOLLOW ME:
YOUTUBE FAN FUNDING on my channel Home page

If you can't afford to become a monthly patron...
click or watch the ads to help me out.

What the heck is an Apothem? (Geometry #64)

Surface Area of Square Pyramid (Geometry #265)

Surface Area of Triangle Pyramid, Finding the Apothem
(Geometry #266)

Surface Area of a Pentagonal Prism (Geometry #267)

How to Find an Apothem Measure (Geometry #268)

What is a quadrilateral arrowhead? (Geometry #153)

[LifeofAedan]

Thank you! As always my geometry teacher did it in some sort of confusing way where she pulled out a bunch of numbers and didn't explain where they came

[pixelseeker]

if we know the Apothem and the number of sides "N" of the polygon, we don't need to know the perimeter. The Perimter and each side lenght can be calculated using on these two: apothem and N