[中學] 幾何
請問高手以下這二題如何解呢
1.三角形ABC中,A(4,-1),角B與角C的角平分線分別為
x=1,x-y-1=0求直線BC的方程式?
2.証明三角形ABC中,P為角A的外角平分線上一點
試証明PB+PC>AB+AC
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.123.218.161
→
02/18 14:54, , 1F
02/18 14:54, 1F
→
02/18 14:56, , 2F
02/18 14:56, 2F
→
02/18 15:30, , 3F
02/18 15:30, 3F
→
02/18 15:31, , 4F
02/18 15:31, 4F
→
02/18 23:29, , 5F
02/18 23:29, 5F
→
02/18 23:49, , 6F
02/18 23:49, 6F
推
02/19 10:25, , 7F
02/19 10:25, 7F
討論串 (同標題文章)