### + / -檢視主題

#ed_op#DIV#ed_cl##ed_op#SPAN lang=EN-US#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#

tangpakchiu 寫到:

### [問題]我有問題

#ed_op#DIV#ed_cl#這句'(ADM+BNC)+(ADN+BMC)=四邊形ABCD'不太明白，可否解釋一下?#ed_op#/DIV#ed_cl#
#ed_op#DIV#ed_cl#面積..50#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#&nbsp;#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#IMG alt="image file name: 2k8fd6cfb077.gif" src="http://yll.loxa.edu.tw/phpBB2/richedit/upload/2k8fd6cfb077.gif" border=0#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#(ADM+BNC)+(ADN+BMC)=四邊形ABCD#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#由此可知ADP+BCQ=PMQN=50#ed_op#/DIV#ed_cl#

### [問題]幾何題2

#ed_op#DIV#ed_cl##ed_op#IMG alt="image file name: 2k8fd6cfb077.gif" src="http://yll.loxa.edu.tw/phpBB2/richedit/upload/2k8fd6cfb077.gif" border=0#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#&nbsp;#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#任意四邊形ABCD的面積為150,N,M分別為AB,DC的中點，四邊形NPMQ的面積為50，三角形APD+三角形BQC的面積等於多少??並證明你的結論。#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl#