Contact us
Choose a category below so we can get back to you as quickly as possible.
答案就是B~因為其他選項除了平行之外又更加多的限制.比如A,菱形要求四條邊相等.而根據題目條件,只可知向量AB和DC在數量上相等;對於AD、BC是否與AB、DC相等則無從考證.再比如C,矩形.矩形必然要求相鄰邊互相垂直.而由…
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.