Contact us
Choose a category below so we can get back to you as quickly as possible.
如果是A(-1,1),B(1,3),C(3,5)的話,那ABC,在一條直線上 直線為y=x+2 c(2,5)的話,在這直線上.
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.