Great geometry primer on perimeter and area. Listen carefully. Sal explains the concepts so you’ll understand them.

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Geometry on Khan Academy: We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large–from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine (“It’s good for you!”), it’s at the core of everything that exists–including you. Having said all that, some of the specific topics we’ll cover include angles, intersecting lines, right triangles, perimeter, area, volume, circles, triangles, quadrilaterals, analytic geometry, and geometric constructions. Wow. That’s a lot. To summarize: it’s difficult to imagine any area of math that is more widely used than geometry.

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You guys saved my grade’s ass multiple times. Thanks.

didn’t help

i get it!!! yay! i was having trouble understanding perimeter and area in class so i thought maybe i can find a video to help me understand it more. And i found this video! it helped me so much! Thank you so much Khan academy!

I todally appreciate your help and your channel!! Good job!! SQEAL!!!

i meant SQUEAL!

for me you are the best teacher for science and math xD Lewl

Anyone in twenty 16

Lol

Watching this

Dude thank you know I und Rostand area you are going to make me bomb my test yo bro I love watching your videos

let’s hope he saves my ass when I tak the accuplacer a second time and hope I pass

YOU SAVED MY LIFE I LOVE YOU

WELL THEN, he forgot to add the squared symbol at the end of the actual answer for area….you supposed to do that right?

any one go to glaicercreek middle school

thanks for the help guys

I am in 4th grade and is way ahead of level in school!!! THANKS

ILYSM TOMORROW IS MY QUIZ IN THIS AND I WAS ABSENT FOR THE LAST 2 WEEKS BUT THIS HELPED ME ALOTTTTTTTTTT

Kind of help me but not really it’s kind of confusing

Doesn’t help

Bad YouTube

Thank you

so….. basically it’s length times width

It’s very use full

very good to understand the basic of Perimeter and area

Hey that is

In a nutshell Perimeter=Add up all the sides Area=Length x Width

ur confusing everyone khan academy. You said perimeter of abcd is 7 plus 5 plus 7 plus 5. Thats equivelent to l plus w x2

This video is 6 years old and it’s still helpful

What app are you using

How do you draw so straight in pc your epic! 👍🏻❤️

whats the app

Helpful!

Im watching for exam

are u Pakistani

sorry

thank you for teaching me

I have a test on geometry tomorrow. Hope this saves me.