So, I am taking a history of mathematics course, and apparently the greeks could square a triangle by using just a ruler and compass. How did they do this? I figured out that if bh/2=area of triange then √(2bh)/2=√area of that triangle

But I cant seem to figure out how they did this with ruler and compass. Im looking at right triangles so I can someone use pythagorean squares but I havent been able to do it,

Any help will be appreciated,

thanks