X+x=y
or
2x=y
where x= first 2 boxes
y= last box
Answer: x = -6 and y = -9
Explanation:
Hi!
Your answer is C.
The vertex is the point where two different rays meet, forming an angle.
It can also simply be the point where 2 straight lines simply meet.
Option A is NOT correct because a vertex is not angle, it is a <em>part </em>of an angle.
Option B is NOT correct because, if there's only one segment, we cannot form a vertex.
See the image below for an example:
Answer:

Step-by-step explanation:

Answer:
Im dumb
Step-by-step explanation:
I can't help