{"ok":true,"question":{"id":21057,"question_uuid":"fb40428c-0fe0-4ae5-ade0-f375d9fff451","job_id":4,"source_file":"A中考/2026江苏中考期末数学试卷+答案825.pdf","source_page_start":7,"source_page_end":7,"source_bbox":"[30.0, 511.95, 557.04, 796.15]","subject_code":"math","grade_level":"JUNIOR","tree_code":"KT_JUNIOR_MATH_STANDARD","question_type":"comprehensive","canonical_json":"{\"year\": null, \"blocks\": [{\"text\": \"如图, 在△ABC中, ∠C = 90∘, 以AB上一点O为圆心, OA长为半径的圆与BC相切于点D, 分别交AC, AB于点E, F． 2026-06-22\", \"type\": \"text\"}, {\"kind\": \"embedded_image\", \"type\": \"figure\", \"width\": 708, \"height\": 545, \"sha256\": \"2c870799facd17fd50b710a228a74e90a7a763bcece923da5edd3393820ff9fc\", \"caption\": \"\", \"asset_key\": \"math/2026/09/16de2e24-a616-456b-83c5-3364ab6bd928/fb40428c-0fe0-4ae5-ade0-f375d9fff451/2c870799facd.png\", \"public_url\": \"http://tikupdfpng.mtwlkj.net:5129/qbank/math/2026/09/16de2e24-a616-456b-83c5-3364ab6bd928/fb40428c-0fe0-4ae5-ade0-f375d9fff451/2c870799facd.png\", \"source_bbox\": [30.0, 580.1900024414062, 171.6999969482422, 691.0399780273438], \"source_page\": 7}, {\"type\": \"subquestion\", \"index\": 1, \"blocks\": [{\"text\": \"若\", \"type\": \"text\"}, {\"type\": \"math_inline\", \"latex\": \"AC = 6\"}, {\"text\": \",\", \"type\": \"text\"}, {\"type\": \"math_inline\", \"latex\": \"AB = 10\"}, {\"text\": \", 求\", \"type\": \"text\"}, {\"type\": \"math_inline\", \"latex\": \"\\\\odot O\"}, {\"text\": \"的半径;\", \"type\": \"text\"}]}, {\"type\": \"subquestion\", \"index\": 2, \"blocks\": [{\"text\": \"连接OE, ED, DF, EF. 若四边形BDEF是平行四边形, 试判断四边形OFDE的形状, 并说明理由.\", \"type\": \"text\"}]}], \"source\": {\"bbox\": [30.0, 511.95, 557.04, 796.15], \"file\": \"A中考/2026江苏中考期末数学试卷+答案825.pdf\", \"regions\": [{\"bbox\": [30.0, 511.95, 557.04, 796.15], \"page\": 7}], \"section\": \"match\", \"page_end\": 7, \"page_start\": 7, \"section_label\": \"智适化匹配练习 ★ 交互式系统学习\", \"answer_regions\": []}, \"version\": 1, \"grade_level\": \"JUNIOR\", \"number_label\": \"4\", \"subject_code\": \"math\", \"question_type\": \"comprehensive\", \"content_sha256\": \"5be0bdc91f62b558174f03d400c675583203b5f32f80d4cc1c2ad527b2a5154b\"}","body_html":"
如图, 在△ABC中, ∠C = 90∘, 以AB上一点O为圆心, OA长为半径的圆与BC相切于点D, 分别交AC, AB于点E, F． 2026-06-22\"\"
（1）若\\(AC = 6\\),\\(AB = 10\\), 求\\(\\odot O\\)的半径;
（2）连接OE, ED, DF, EF. 若四边形BDEF是平行四边形, 试判断四边形OFDE的形状, 并说明理由.
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