Corina What are some ways that we use the pythagorean theorem in jobs, or even in everyday life? Hi Josh, People building fences will use the 345 triangle to make right angles: Suppose that you have laid the posts on one side P P P P P P Where should you lay the next post to continue the fence at a right angle? It is tough to produce a 90 degree angle out in the open with nothing to guide you. One trick is to take a long enough rope and mark off two points A and B on its length such that the lengths of the three segments are proportional to 3, 4, 5: O3A4B5O Have a friend hold the A point on the last fence post, another friend hold both ends together on the line of fence posts already completed, and hold the B point in the direction where you want to continue the fence. Now tighten everything and drive a stake at B. Since the 345 triangle is right, you will want to place the new fence line in the direction of the AB line. Cheers,Claude
