Answer:
C, A
Step-by-step explanation:
First question:
As you can see the shape we're working with here is a pyramid and we must first understand that the 4 sides of a pyramid are triangles and the base of the pyramid is a square.
As shown in the picture, the cut is going horizontally through the same place the base is, so therefore, the shape the cross section would make would be a square. (c)
Second question:
Same shape; different size.
We're still working with a pyramid here, just that the base is bigger.
We can see how that the cut is going vertically through the middle of the triangle, parallel to it's side, which I mentioned earlier is a triangle
Therefore, the shape of this cross section would be a triangle. (a)
