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