Contact us
Choose a category below so we can get back to you as quickly as possible.
N∈∠B平分線,ND=NE. N∈AC邊的垂直平分線,NA=NC,又∠ADN=∠CEN=90º; ∴Rt⊿ADN≌Rt⊿CEN(斜邊,腰),∴AD=CE
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.