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Pi, The Irrational Mathematical Constant, Teacher Keychain

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Square (double-sided)

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About Key Chains

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Shape: Square (double-sided)

Never leave home without your favorite photo, design, or inspirational message attached to your keys with this custom circle keychain. Designed to withstand daily wear and tear, this keychain displays designs, text, and photos in vibrant clarity and brilliant colors.

  • Dimensions: 1.875" x 1.875"
  • Made of ultra-durable acrylic
  • UV resistant and waterproof
Designer Tip: To ensure the highest quality print, please note that this product’s customizable design area measures 1.875" x 1.875". For best results please add 1/16" bleed.

About This Design

Pi, The Irrational Mathematical Constant, Teacher Keychain

Pi, The Irrational Mathematical Constant, Teacher Keychain

This black and white art piece, designed digitally, is released in commemoration of Pi Day, which is observed each year on March 14. The date 3.14 corresponds to the rounded value of π (pi), a well-recognized mathematical constant. The design features the value of the Pi constant to the first 100 decimal places in a circle (composing a circle’s circumference), and the symbol and name of the constant across the circle (composing the diameter of the circle). As π is commonly defined as Circumference divided by the Diameter of a Circle. Interesting to note is that π (pi) is an irrational number, meaning that its decimal form neither ends nor becomes repetitive. It also the sixteenth letter of the Greek alphabet. March 14 is also celebrated as International Day of Mathematics, which was designated as such by the United Nations Educational, Scientific and Cultural Organization (UNESCO) at their 40th General Conference in November 2019, to emphasize the importance of the mathematical sciences. This is a perfect addition to your office or library or gift for that math teacher you adore! For special requests or questions, contact the artist at wafadahdalcreates@gmail.com. © Wafa Y. Dahdal - All Rights Reserved.

Customer Reviews

4.8 out of 5 stars rating956 Total Reviews
846 total 5-star reviews76 total 4-star reviews15 total 3-star reviews8 total 2-star reviews11 total 1-star reviews
956 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars rating
By Melissa W.December 26, 2014Verified Purchase
Acrylic Keychain, Square (double-sided)
Zazzle Reviewer Program
This key chain was totally worth getting. It was bigger than I expected but not over-sized. Great quality. Could be given as a gift for any occasion ... just order with the pictures that you want the other person to have. Personally, I bought one for myself, one for my mom (for her birthday). I was satisfied with every thing about this. Excellent quality pictures, durable, looks really nice.
3.0 out of 5 stars rating
3 out of 5 stars rating
By Kim K.March 28, 2026Verified Purchase
Acrylic Keychain, Square (double-sided)
The picture was nice but didn't come with the key chain part, disappointed. .
5.0 out of 5 stars rating
5 out of 5 stars rating
By shuntal w.January 7, 2021Verified Purchase
Acrylic Keychain, Square (double-sided)
Zazzle Reviewer Program
I love zazzle and that I can customize items that won’t be used by others . All my stuff come faster than expected. Love the printing and the way my items come out

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black and whitemathteachersciencenerdgeekpi daypersonalized keychainsschoolkey chain ideas

Other Info

Product ID: 256648235782433735
Created on: 1/25/2024, 12:56 AM
Rating: G