B. Is the answer because you can fold it in half

The given pair of angles are vertical opposite angle pair so, they are equal. i.e
Answer:
what is this and give more info next time too
Step-by-step explanation:
Hello!
Let's write this as an equation below.
3/4x=87
To find our answer ,we just divide both sides of the equation by 3/4.
x=116
Therefore, 116 people attended the concert.
I hope this helps!
The correct answer is option B. If two congruent angles form a linear pair, then <span>they are both right angles. </span>Two figures are said to be congruent when they
have the same shape and size or if one object is a mirror image of the other
object.