 three foot on one side you pull out from the market on the string you pull out four foot on the other string and then when you measure across to those two points on the diagonal you'll get five it should be five and that tells you that you just adjust the the the angle until the distance between the end of each of those is five foot there you go right if i could spell pythagorean or pythagorean then that's the theorem that's the theorem a squared plus b squared equals c squared