Answer:
D)a triangle that does not have the same dimensions as one of the faces
Explanation:
The shape of the cross section, which is perpendicular to the base, has a base of the same length as the base of the pyramid. from the base, two lines go up and inward from the edges, towards the vertex of the pyramid. This makes the shape of a triangle. Since the triangle can be considered the straight edge of a right angle triangle, and the sides of the pyramids would be considered the hypotenuse, the cross section does not have the same dimensions as one of the faces.