Cross section (geometry)

Imagine you have a big piece of bread, and you want to cut it in half. You take a knife and slice through the bread, and when you look at the cut side of the bread, you can see the inside of the bread - it looks like a circle. That circle is called the cross section of the bread.

Cross section is just a fancy way of saying "the shape you get when you slice something." It's a two-dimensional shape that you can see when you cut through something in a certain way.

Cross section is a term used in geometry to describe the shape you get when you slice a three-dimensional object with a plane. It helps us understand the properties of three-dimensional shapes by looking at them from a different angle.

For example, imagine you have a sphere, like a ball. If you were to slice it with a plane, you would get a circle as the cross section. If you were to slice a cone, you would get a triangle or a circle depending on how you slice it.

In summary, cross section is just a fancy word that grownups use to describe the shape you get when you slice something. It's a useful tool in geometry to help us understand the properties of three-dimensional shapes.