What is the shape of the slice of a circular pizza?

A. Sector

B. Segment

C. Tangent

D. Radius

The correct answer is: A. Sector 

Explanation:

• A sector of a circle is the portion enclosed by two radii and the arc between them.
• When you cut a circular pizza into slices, each slice has this exact shape: two straight edges from the center to the crust (radii) and the curved edge along the crust (arc).

Other options:

• Segment: Portion of a circle cut off by a chord (not the whole slice).
• Tangent: A line touching the circle at one point (not a slice).
• Radius: The distance from the center to the edge, not the slice itself.

So every pizza slice is a sector of the circle.