102.23 A visual proof that is irrational

A geometric proof that $\sqrt{3}$, $\sqrt{5}$ and $\sqrt{7}$ are irrational

“…For the sake of completeness, we mention that there are some few geometrical proofs that √ n is irrational for every n not a square. We point out the proof of Derek Ball based on successively cutting squares from rectangles ( [1]), the one of Terence Jackson using similar triangles ([4]) and a recent one from Nick Lord tiling rectangles ( [5]).…”