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