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Are You Congruent? (Congruent Angles) Coaster

4.6 out of 5 stars rating
505 Total Reviews |
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Sandstone CoasterCreate your own from scratch

Style: Sandstone Drink Coaster

Mom always told you to use a coaster, so make her happy by using one from Zazzle! Made to keep your tables scratch-and-moisture-free, our sandstone coasters have a cork backing, so you can use them on any surface. They also have a matte finish and work best with vintage illustrations, black-and-white photos, and personal text messages.

  • Dimensions:
    • Diameter: 10.8 cm
    • Thickness: 0.6 cm
    • Weight: 110 g.
  • Made of sandstone with a cork pad backing
  • Not dishwasher safe
Creator Tip: To ensure the highest quality print, please note that this product’s customisable design area measures 10.8 cm x 10.8 cm. For best results please add 0.3 cm (1/8") bleed.

About This Design

Are You Congruent? (Congruent Angles) Coaster

Are You Congruent? (Congruent Angles) Coaster

No need to be a mathematician or geometry fan to enjoy wry geometric humour with any of these gifts featuring congruent angles, angles that have the same degrees no matter how they are rotated, reflected, or translated. Make others do a double-take with the tongue-in-cheek saying "Are You Congruent?" and wonder exactly what you are asking about!
Words & Unwords
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Artwork designed by
Washington, United States
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Customer Reviews

4.6 out of 5 stars rating505 Total Reviews
395 total 5-star reviews70 total 4-star reviews20 total 3-star reviews7 total 2-star reviews13 total 1-star reviews
505 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars rating
By Joe P.March 27, 2026 • Verified Purchase
These are lovely coasters and a great size.
5.0 out of 5 stars rating
5 out of 5 stars rating
By Gravityx9 D.May 21, 2026 • Verified Purchase
Sandstone Coaster
Creator Review
Bright and colorful! The printing is nice and crisp. True to color as seen on the webpage. The cork backing is well placed and there are no loose edges. I love this sandstone coaster! I would recommend this product for gifts, stocking stuffers, or for yourself!
from zazzle.com (US)
5.0 out of 5 stars rating
5 out of 5 stars rating
By B.November 3, 2012 • Verified Purchase
Sandstone Coaster
Zazzle Reviewer Program
surprisingly good quality......not just a casual gift. sharp and appropriate
from zazzle.com (US)

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equalcongruentmathgeometryangletruismgeekhumourare you congruentwords and unwords
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equalcongruentmathgeometryangletruismgeekhumourare you congruentwords and unwords

Other Info

Product ID: 174446766357697021
Designed on 2013-06-28, 8:22 AM
Rating: G