Slice a sphere through the center

Step by step

The question

Question: what shape is the cut, if we slice a sphere anywhere?

A cross section is the flat face we see when we slice a solid.

1 Look at the cut

Here is the sphere.

We slice it anywhere.

The red face is the cut.

2 Name the shape

Flat, the cut looks like this.

A sphere is round every way.

Every cut is a circle.

So it is a circle.

Careful!

Picture the flat face where the knife went through.

3 Check

Let's check: cut an orange anywhere.

The face is always round.

So the answer is right!

Let's look back.

First: look at the cut.

Then: name the shape.

Last: check.