PDF chapter test TRY NOW

Give a definition for each of the following terms. Are there other terms that need to be defined first? What are they, and how might you define them?
 
(i) parallel lines
 
(ii) perpendicular lines
 
(iii) line segment
 
(iv) radius of a circle
 
(v) square
 
Important!
This is a self assessment task. Solve this question and assess the solution steps after the completion of test on your own.