{"type":"rich","version":"1.0","title":"R₁ = R ⇒ CDT = BGP = 60°","html":"<iframe src=\"https://www.desmos.com/calculator/5oysupkayl?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}