The shape of cross section is trapezoid.
What is square pyramid?
A square pyramid is a pyramid, where four triangular sides correspond to each side of square base.
What is vertex of a pyramid?
A vertex is a point where edges of a pyramid meet or intersect.
What is cross section?
A cross-section is a shape which is obtained by the intersection of any solid object by a plane.
What is trapezoid?
"It is a quadrilateral that have two parallel sides and two non-parallel sides."
For given example,
If pyramid is sliced so the cross section is perpendicular to its base but does not pass through its vertex, then from figure the cross section is dark green region.
The shape of this shaded cross section is trapezoid.
Hence, the shape of cross section is trapezoid.
Learn more about rectangular pyramid here,
brainly.com/question/21371271
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