{"type":"rich","version":"1.0","description":"사각형의 분류","title":"사각형의 성질 분류","width":720,"html":"<iframe src=\"https://arcade.padlet.com/embed/6AKEMNEyK5\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","height":480,"provider_name":"Padlet Arcade","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1786141683416&hashid=6AKEMNEyK5","provider_url":"https://arcade.padlet.com"}