Contact us
Choose a category below so we can get back to you as quickly as possible.
作A'(-1,7)B'(3,-4)連A'B'交X軸上得C交Y軸得D 證明:BC=B'C AD=A'D 四邊形ABCD的周長=AB+BC+CD+DA=AB+B'C+CD+DA' AB是定值B'C+CD+DA'最小是A'B'那麼長
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.