{"type":"rich","version":"1.0","title":"Proof: 2 ( X-Y ) = 3 ( AC-AB )","html":"<iframe src=\"https://www.desmos.com/calculator/2uytbc0us7?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}