Putting it in the middle sorry if it isnt right i never was really good at these but i tried.
You divide the answer and it will equal 12
Start at one of the vertices and draw a line from there to a point on the oposite side, not ending at another vertex
The negative sign show the change in direction, that is the opposite side of the value.
In the number line, 1 is the opposite of -1, that is the digit from the left side is the opposite value of the right side.
Consider an object P is moving in positive x direction than on moving the object into its opposite direction, it will move along the negative x axis.
Answer : A) -