Arectangular 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? square triangle trapezoid rectangle

The shape of the cross section is a triangle. Therefore, the answer is the second option: Triangle.
 A rectangular pyramid is a pyramid that has a rectangle as its base. Therefore, its base has four sides. The rectangular pyramid also has four triangles that coming together in its apex. So, if the rectangular pyramid is sliced so the cross section is perpendicular to its base and passes through its vertex, the cross section obtained is a triangle.

Just a question- could you organize the data better? i just cannot tell which number are for which bakery. i will be happy to answer this question if you could do this for me! : )