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中考压轴|鸡爪模型专项训练!旋转全等经典

  • 2026-11-03 06:14:50
中考压轴|鸡爪模型专项训练!旋转全等经典

中考压轴｜鸡爪模型专项训练！旋转全等经典

【🔥 中考・鸡爪模型专项卷｜旋转全等】 核心口诀：共顶点，等线段，遇旋转，造全等 适用：初三中考复习、几何压轴突破 题型：填空压轴 + 几何证明大题 考点：正方形旋转、等边旋转、线段最值、面积、线段关系探究

鸡爪模型的核心：找到一组共顶点的等长线段，把三角形旋转 60°/90°，构造全等，转移边和角。 看到正方形、等边三角形内 / 外一点，给三条线段长度，优先考虑旋转！

原文中考压轴｜鸡爪模型专项训练！旋转全等经典大题合集
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  1. CONNECT:[ UseTime:0.000422s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000637s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000316s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000370s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000704s ]
  6. SELECT * FROM `set` [ RunTime:0.000323s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000672s ]
  8. SELECT * FROM `article` WHERE `id` = 533576 LIMIT 1 [ RunTime:0.000365s ]
  9. UPDATE `article` SET `lasttime` = 1793708123 WHERE `id` = 533576 [ RunTime:0.001046s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000319s ]
  11. SELECT * FROM `article` WHERE `id` < 533576 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000406s ]
  12. SELECT * FROM `article` WHERE `id` > 533576 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000349s ]
  13. SELECT * FROM `article` WHERE `id` < 533576 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000543s ]
  14. SELECT * FROM `article` WHERE `id` < 533576 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000570s ]
  15. SELECT * FROM `article` WHERE `id` < 533576 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000769s ]
0.090199s