March 14: Pi Day

Pi Day is an annual celebration that falls on 3/14 each year. Three, one, and four are the first three significant digits of pi (3.14159…). But why stop with circles? Follow these links to thousands of math illustrations. You’ll be sure to find something you’ve never seen before. Or listen to an audiobook about Flatland, where circular inhabitants are at the top of society.

March 14: Pi Day

Share your love of pi with this social media banner.

Geometric Shapes

Wander through all 999 images in the Geometric Shapes gallery.

Clocks Are Round, Too

We’ve got over 2,000 clock faces, but this one shows “pi time.”


Over 800 geometry illustrations for your viewing pleasure.

Pie-Shape Fractions

Over 400 fraction illustrations to choose from, but the pie-shaped ones are the tastiest.

Spheres Need Pi, Too

Can’t calculate a sphere’s volume or surface area without pi.

And Coins

With nearly 400 coin illustrations, finding enough to make $3.14 should be easy.

Order the Works!

Checkout the entire Mathematics section of the ClipArt ETC website. It includes over 9,000 Math illustrations for classroom use.

Flatland: A Romance of Many Dimensions

Grab a slice of pie, find a comfy seat, and listen to a unique geometric novel where the number of sides a polygon indicates social class, with circles being considered the “perfect” shape. Flatland is just one of many free audiobooks available at the Lit2Go website.