YLL討論網

#ed_op#DIV#ed_cl#兩圓相切的幾何計算題, 有些輔助線幾乎是必畫的:#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#連心線, 外公切線, 連外公切線的半徑......#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#這些是解題的要點#ed_op#/DIV#ed_cl#

#ed_op#DIV#ed_cl##ed_op#IMG alt="image file name: 2kc8bd1ea99b.gif" src="http://yll.loxa.edu.tw/phpBB2/richedit/upload/2kc8bd1ea99b.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#矩形ABCD中，AB=25，BC=18，☉#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#與矩形的三邊#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#AB#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#AD#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#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#都相切，☉#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#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#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#外切，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#AB#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#BC#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#都相切，求☉#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#的半徑．#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##ed_op#?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /#ed_cl##ed_op#o:p#ed_cl##ed_op#/o:p#ed_cl##ed_op#/SPAN#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl#