{"type":"rich","version":"1.0","title":"Polar Graphing: CIRCLES r=2acos(x) LEFTdegrees","html":"<iframe src=\"https://www.desmos.com/calculator/qp7d6w8t6c?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}