1.从任一点到任一点可作一条直线
Todrawastraightlinefromanypointtoanypoint.
2.一条有限直线可沿直线继续延长
Toproduceafinitestraightlinecontinuouslyinastraightline.
3.以任一点为心和任意距离可以作圆
Todescribeacirclewithanycentreanddistance.
4.所有直角都彼此相等
Thatallrightanglesareequaltooneanother.
5.一直线与两条直线相交,若在同侧的两内角之和小于两直角,则这两条直线无定限延长后在该侧相交
That, ifastraightlinefallingontwostraightlinesmaketheinterioranglesonthesamesidelessthantworightangles, thetwostraightlines, ifproducedindefinitely, meetonthatsideonwhicharetheangleslessthanthetworightangles.
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