3-4-5 Method

[Music] there are several reasons why you might want to identify a right-angle perhaps you're building a raised bed building a fence or building a deck it's a pretty simple method that we're going to use here called the three four five method and in order to do that we're going to need some string a tape measure and three pins so we're gonna first put our first pin right here at the corner where we want our ninety degree angle at that point we're gonna measure a distance of three feet from that pin so we've got our measurement of three feet we're gonna put our first pin at the three foot marker and we're then going to draw a string to that point and we want to make sure that we tie a tight knot there to keep that string tight then we're going to then pull that string back to that corner pin at this point we're going to take our tape measure and go out four feet on the next leg so our second pin will put at that four foot mark and again we'll draw our string from the corner to that pin you then want to measure the distance between your two legs so your second and your third pin that you put in and that distance should equal five feet if it's more or less you might need to move one of those points to make sure that that hypotenuse is 5 feet so here we have 3 4 & 5 and therefore we know that this is a square corner and we'll go ahead and make our right triangle just like this at this point knowing that this is a right triangle what we can do then is take our string and run it along those two pins and you just want to touch them and we can run this as long as we want and we know that we're drawing a straight line and that we have a right corner now this is called the 3 4 5 method you could actually double those numbers and make it the 6 8 10 method if you were building something larger and wanted to have better accuracy really this is using the Pythagorean theorem you might remember a squared plus B squared equals C squared I think I might owe my math teacher an apology because I told her I'd never need to know this in real life we hope you enjoyed this video it's part of our Oklahoma gardening youtube channel you can also find even more videos on our ok gardening classics youtube channel and join us on social media for great gardening tips photos and discussion [Music]

Channel: OklahomaGardening

Views: 2,452,856

Keywords: Osu, Oklahoma, Oklahoma state university, extension, research, teaching, agriculture, Oklahoma gardening, casey hentges, 2018, full episode, 3-4-5 method, garden math

Id: 7mzvEgDLPn4

Length: 3min 20sec (200 seconds)

Published: Fri Apr 06 2018