Question

A rectangular pyramid is sliced so the cross section is perpendicular to its base and passes through its vertex. What is the shape of the cross section?

Answer 1

Answer with explanation:

A pyramid is a three dimensional shape, whose base is any polygon and other faces are triangles,meet at a point.

When, the rectangular pyramid is sliced so that the  cross section is perpendicular to its base and passes through its vertex, you can say that the three dimensional view of this shape will be a Rectangular Pyramid or Pyramid having base as a Quadrilateral .

But front view  or two dimensional view of this shape will resemble with triangle.

Answer 2

The shape of the cross section should be a triangle.