Question

what shape is the cross section? circle triangle parallelogram rectangle

Explanation:

Step1: Recall cross - section of a sphere

A sphere is a three - dimensional object. When a plane cuts through a sphere, the cross - section is a circle.

Step2: Analyze other options

A triangle is formed when a plane cuts a triangular - based pyramid or some other polyhedra with triangular faces. A parallelogram is formed when a plane cuts a prism (e.g., a parallelepiped) in a non - perpendicular non - parallel way. A rectangle is formed when a plane cuts a rectangular prism (a cuboid) perpendicularly to its length (or width or height in a proper orientation). But for a sphere, the cross - section is always a circle.

Answer:

circle