Contact us
Choose a category below so we can get back to you as quickly as possible.
平行線定義1.在同一平面內,不相交的兩條直線叫做平行線平行線的性質1.平行線不相交(根據定義)2.兩條直線平行,同位角相等3.兩條直線平行,內錯角相等4.兩條直線平行,同旁內角互補5.平行線之間的距離…
不是公理.而是定理 (公理是無須證明的,一般的水准也根本證明不了)
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.