Correct Answer: A
Explanation:
This question is trying to put a mathematical definition to a real life situation. First, recall the definitions of circles and corresponding angles.
A central angle is known as the angle of a circle where the vertex of the angle is located at the center of the circle.
A circle is composed of 360 degrees.
Knowing these characteristics, solve for the central angle of one slice of pizza.
360o=5â‹…slice
360o /5=silce
72o=slice
Therefore, the correct answer is
"The central angle of one pizza slice is 72 degrees."