Diagram for <a href="https://en.wikipedia.org/wiki/Pythagorean_theorem#Proof_using_differentials" class="extiw" title="w:Pythagorean theorem">differential proof</a> of <a href="//commons.wikimedia.org/wiki/Category:Pythagorean_theorem" title="Category:Pythagorean theorem">Pythagoras' theorem</a>
<a href="//commons.wikimedia.org/wiki/User:JohnBlackburne" title="User:JohnBlackburne">JohnBlackburne</a>
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<span class="int-own-work" lang="en">Own work</span>