Contact us
Choose a category below so we can get back to you as quickly as possible.
連接AC,AD,延長CB至點E′,使得BE′=BE,連接AE′∵∠B=∠E=90°∴∠CBE′=∠E=90°又∵AB=AE∴△AED≌△ABE′∴AD=AE′又∵BC+DE=BC+BE′=CE′=4∴CD=CE′=4∴△ACD≌△ACE′∵五邊形ABCDE的面積=四邊形AE′CD的面積=…
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.