Points , Lines and Angles

What do we call an exact position in space with no dimension

(a)  

 $\longleftrightarrow$  is called a 

(a)  

 $\longrightarrow$  is called a 

(a)  

 $\parallel$  indicates two lines are (a)  

 $\perp$  indicates two lines are 

(a)  

An angle equal to 90 degrees is called a (a)   angle .

An angle greater than 180 degrees and less than 360 degrees is called a (a)   angle

 $\degree$  An angle that measures 135 degrees is called a/ an (a)   angle 

When two or more angles add up to 180 degrees we say they are (a)   angles

When two or more angles add up to 90 degrees we say they are (a)   angles .