Shapes From Slicing a Cube
We are shown a cube, let's say of side length x.
The plane intersects the cube in such a way the length of the shape is the diagonal of the upper surface of the cube.
Since all the lateral surfaces of the cube are squares, the diagonal d of the shape is:
![d=\sqrt[]{2}x](https://img.qammunity.org/2023/formulas/mathematics/college/5mj75spe0abddk59xmyrcrb2l3oesu48j4.png)
The height of the shape equals the height of the cube, that is, h=x.
The shape is, then, a rectangle of two side lengths equal to d and two side lengths equal to x
Answer:
B. Rectangle