You would use the equation
F+V=E+2
Answer:
1.) 
2.) 
Step-by-step explanation:
1.) 
2.) 

-7-5+3=1
-12+3=1
-9≠1. As a result, this is False. Hope it help!
Answer:
answer is c of your question
Intersecting lines are lines that meet at some point while perpendicular lines are intersecting lines that makes a right angle at the point of intersection.
Two line can either be intersecting or perpendicular. It is not possible to have two line that is neither intersecting or parallel.