[幾何] 三角形內部一點
設三角形ABC三邊長為10,12,14，若P為三角形內部一點，
則PA+PB+PC的最小值為?
請問該怎麼下手?
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推
05/17 10:56, , 1F
05/17 10:56, 1F
→
05/17 10:56, , 2F
05/17 10:56, 2F
→
05/17 10:58, , 3F
05/17 10:58, 3F
→
05/17 10:58, , 4F
05/17 10:58, 4F
推
05/17 11:04, , 5F
05/17 11:04, 5F
→
05/18 01:07, , 6F
05/18 01:07, 6F
推
05/18 12:32, , 7F
05/18 12:32, 7F
→
05/18 12:33, , 8F
05/18 12:33, 8F
→
05/18 16:10, , 9F
05/18 16:10, 9F
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