{"type":"rich","version":"1.0","description":"直方体と立方体の面・辺・頂点","title":"直方体と立方体","width":720,"html":"<iframe src=\"https://arcade.padlet.com/embed/60KmRL91r7\" 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=1786990289182&hashid=60KmRL91r7","provider_url":"https://arcade.padlet.com"}