Matching Pairs Geometry vocabOnline version 3rd grade geometry vocab by Lori Darden 1 Intersecting lines 2 Parallel lines 3 vertex 4 line 5 angle 6 line segment 7 right angle 8 ray straight path that goes on without end in 2 directions forms a square corner they cross formed when 2 rays share the same endpoint. is part of a line. It has 2 end points. they do not cross the endpoint shared by 2 rays. It has 1 endpoint and goes on without end in 1 direction.