CE为角平分线。AE = Y*X/(8+X)且AE=EC。三角形ADC与三角形CDE相似
Y/X = 8/EC=8/AE, 即得 Y^2 = 8*(8+X)。
补充这个作角平分线推导第二方程的细节。
本帖于 2022-04-13 23:17:36 时间, 由普通用户 wxcfan123 编辑
CE为角平分线。AE = Y*X/(8+X)且AE=EC。三角形ADC与三角形CDE相似
Y/X = 8/EC=8/AE, 即得 Y^2 = 8*(8+X)。
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