Cross Sections

A cross section is the shape you get when cutting straight across an object.

cross section of prism

The cross section of this object is a triangle.


It is like a view into the inside of something made by cutting through it.

This is a cross-section of a piece of celery. cross-section of a piece of celery


In geometry it is the shape made when a solid is cut through parallel to the base.

Note: don't draw the rest of the object, just the shape made when you cut through.

cross-section of a pyramid


The cross section of a rectangular pyramid is a rectangle

cross-section of a cylinder


The cross section of a circular cylinder is a circle

More Examples of Cross Sections

Square Prism: Cross-Section:

Cube: Cross-Section:

Pentagonal Prism: Cross-Section: