相似三角形常用的模型
http://img.biiyy.com/360doc/2021/05/16/17/vzcr1o05sjj.jpghttp://img.biiyy.com/360doc/2021/05/16/17/vorr1mcns4l.jpg
http://img.biiyy.com/360doc/2021/05/16/17/scnchdfyr0o.jpg
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http://img.biiyy.com/360doc/2021/05/16/17/5ygh01nniev.jpg
http://img.biiyy.com/360doc/2021/05/16/17/ek5wbbvxd44.jpg
http://img.biiyy.com/360doc/2021/05/16/17/uisd5shregh.jpg
http://img.biiyy.com/360doc/2021/05/16/17/ukgobf31rhp.jpg
http://img.biiyy.com/360doc/2021/05/16/17/xu02zb3ztmg.jpg
http://img.biiyy.com/360doc/2021/05/16/17/5qvxb4mhtkt.jpg
http://img.biiyy.com/360doc/2021/05/16/17/hrwuhv1m22z.jpg
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