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批踢踢實業坊 ask 板

[請問] 國中數學一題

Aug 28th 2014, 12:13, by qoojason

作者qoojason (好想贏韓國)

看板ask

標題[請問] 國中數學一題

時間Thu Aug 28 12:13:48 2014

http://ppt.cc/Dn54 幫同事小孩解題但年代太久了第32題可以指點怎麼解題嗎謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 114.47.52.96 ※ 文章網址: http://www.ptt.cc/bbs/ask/M.1409199233.A.5E8.html

推 Triheart: 1.分角定理 AP:PR=AB:BR=2:1 08/28 12:27

→ Triheart: 2.相似三角形 PO:BP=AP:PR=2:1 因此PO=2 08/28 12:27

→ Triheart: 3.相似三角形 QO:FE=PO:PE=2:5 因此QO=3x2/5=1.2 08/28 12:28

→ qoojason: 感謝樓上 08/28 12:35

→ qoojason: 請問一下PO:BP=AP:PR=2:1 是哪兩個三角形相似 @@ 08/28 12:42

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