Fill in the Blanks Unit 2 Definitions AOnline version Fill in the Blanks to determine the definitions of basic Geometry vocabulary. by Holly Davis 1 common two point rays vertex endpoints infinite indefinitely plane foundation line angle segment ray figures line two surface location one A marks an exact on a , or a flat . It is the of the geometric . You need points , called , to make a line . An number of segments extending in directions is called a . If the line segments only extend in direction , it is a . Two placed end to end with a endpoint , called a , create an .