BBC

Using Pythagoras with coordinates

We can also use Pythagoras to find the distance between two points. Plot the coordinates onto a graph. Join up A and B to show the line AB then form a right-angled triangle.
Scientific American

2 High School Students Have Proved the Pythagorean Theorem. Here’s What That Means

Two high school students have proved the Pythagorean theorem in a way that one early 20th-century mathematician thought was impossible: using trigonometry. Calcea Johnson and Ne’Kiya Jackson, both at ...
Business Insider

2 high schoolers say they've found a proof for the Pythagorean theorem which mathematicians thought was impossible

Two US high schoolers believe they have cracked a mathematical mystery left unproven for centuries. Calcea Johnson and Ne'Kiya Jackson looked at the Pythagorean theorem, foundational to trigonometry.