Contact us
Choose a category below so we can get back to you as quickly as possible.
用等面積法來做,據圖如下:△ADC的面積=1/2CD*AD==1/2 *5*12=1/2*AC*DE=1/2*13*DE,解得DE=60/13 注:AD是BC邊上的高,等於12
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.