{"type":"rich","version":"1.0","title":"180 Degree CCW rotation of triangle (also 180 Degree CW rotation)","html":"<iframe src=\"https://www.desmos.com/calculator/4xb2gpdglw?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}