A^2 + b^2 = c^2
a squared + b squared = c squared, where c is the length of the hypotenuse, and a and b are the lengths of the other two sides in a right-angled triangle.
https://www.youtube.com/watch?v=CAkMUdeB06o
5 3:4:5
pythagoras law
the length of the hypotenuse is equal to the square root of the base squared plus the height squared
ie 3 squared is 9 plus 4 squared is 16 total is 25
square root of 25 is five
it is a very common formula used by builders to ensure that all right angles in a building are square
one side is multiples of 3 long by multiple of 4 long and the diagonal connecting those points has to be multiples of 5 long
if the two points are not exactly multiples of 5 long then the angle is not square and one arm has to be adjusted to fit the multiples exactly
5. And the angle between 3 and 4 will be 90 degrees
The hypotenuse length is 5.
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