{"type":"rich","version":"1.0","title":"|AD|² + |BC|² = |BD|² + |CD|²","html":"<iframe src=\"https://www.desmos.com/calculator/y6tggleiig?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}