YLL討論網

#ed_op#DIV#ed_cl##ed_op#FONT face=新細明體#ed_cl#直線#ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#DC#ed_op#/SPAN#ed_cl##ed_op#/FONT#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"#ed_cl#交☉#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#O2#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"#ed_cl#於#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#E#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"#ed_cl#，#ed_op#/SPAN#ed_cl##ed_op#/DIV#ed_cl#

#ed_op#DIV#ed_cl#角PDC=角CAB???? 但DF並沒有過圓上的C點喎~~~~#ed_op#/DIV#ed_cl#

#ed_op#DIV#ed_cl#角PDC=角CAB=角PAB#ed_op#/DIV#ed_cl#

#ed_op#DIV#ed_cl#想問問jackhoung，為什麼角PDC=角PAB???#ed_op#/DIV#ed_cl#

#ed_op#DIV#ed_cl#連接AB,BF#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#角PDC=角PAB=角PFB#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#角BPE=角BFE#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#角PEF=角PDC+角BPE=角PFB+角BFE=角PEF#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#所以#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#PE=PF#ed_op#/DIV#ed_cl#

#ed_op#DIV#ed_cl##ed_op#IMG alt="image file name: 2kbd14c85223.gif" src="http://yll.loxa.edu.tw/phpBB2/richedit/upload/2kbd14c85223.gif" border=0#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#☉#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#O1#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#與☉#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#O2#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#交於#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#A#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#，#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#B#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#，#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#P#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#是☉#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#O2#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#上一點，#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#PA#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#，#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#PB#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#交☉#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#O1#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#於#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#C#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#，#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#D#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#，直線#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#DC#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#交☉#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#O2#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#於#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#E#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-FAMILY: 新細明體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#，#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-FAMILY: 新細明體; mso-bidi-font-family: 新細明體; mso-font-kerning: 0pt"#ed_cl#F，求證EP=PF。#ed_op#/SPAN#ed_cl##ed_op#/DIV#ed_cl#