perimeter of rectangles (KristaKingMath)

► My Geometry course: https://www.kristakingmath.com/geometry-course

In this video we'll learn how to find the perimeter of a rectangle. Remember that 'perimeter' is just the distance around the outside of the rectangle. Since a rectangle is a quadrilateral with four interior right-angles, that means that opposite sides of the rectangle have the same length, so we can multiply the width by 2, and multiply the length by 2, and then add those products together to get the rectangle's perimeter.

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Hi, I’m Krista! I make math courses to keep you from banging your head against the wall. ;)

Math class was always so frustrating for me. I’d go to a class, spend hours on homework, and three days later have an “Ah-ha!” moment about how the problems worked that could have slashed my homework time in half. I’d think, “WHY didn’t my teacher just tell me this in the first place?!”

So I started tutoring to keep other people out of the same aggravating, time-sucking cycle. Since then, I’ve recorded tons of videos and written out cheat-sheet style notes and formula sheets to help every math student—from basic middle school classes to advanced college calculus—figure out what’s going on, understand the important concepts, and pass their classes, once and for all. Interested in getting help? Learn more here: http://www.kristakingmath.com

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Видео perimeter of rectangles (KristaKingMath) канала Krista King