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HIPPOPOTENUSE card by Sandra Boynton

4.9 out of 5 stars rating
18061 Total Reviews |
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About Folded Greeting Cards

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Folded Greeting CardCreate your own from scratch

Size: 5" x 7"

Thank you, hello, or I love you, custom greeting cards are thoughtful gifts that are always the perfect way to express yourself.

  • Dimensions: 5" x 7" (portrait); 7" x 5" (landscape)
  • Full color CMYK print process
  • Double sided printing for no additional cost

Paper Type: Signature Matte

Our Signature Matte paper is a customer favorite—smooth to the touch with a soft eggshell texture that elevates any design. Its sturdy 18 pt weight and natural feel make it the ideal choice for timeless, sophisticated events.

  • Exclusively made for Zazzle
  • Made and Printed in the USA
  • FSC® Certified—sourced from responsibly managed forests that protect both people and planet

About This Design

HIPPOPOTENUSE card by Sandra Boynton

HIPPOPOTENUSE card by Sandra Boynton

A geometrical model of a right triangle, showing the Opposite, Adjacent, and…wait. WHAT?
Sandra Boynton
Gold
Artwork designed by
The wilds of New England, United States
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Customer Reviews

4.9 out of 5 stars rating18.1K Total Reviews
16926 total 5-star reviews738 total 4-star reviews140 total 3-star reviews77 total 2-star reviews180 total 1-star reviews
18,061 Reviews
5.0 out of 5 stars rating
5 out of 5 stars rating
By Marti F.April 29, 2021 • Verified Purchase
Folded Greeting Card, Size: 5" x 7", Paper: Signature Matte, Envelopes: White
Zazzle Reviewer Program
Such a cute card and well done. Sturdy cardstock and beautiful colors. Ordered a box full of cards and they didn't come folded. Otherwise very pleased with the overall product. The printing is beautiful! Looks great
5.0 out of 5 stars rating
5 out of 5 stars rating
By Helen S.February 5, 2019 • Verified Purchase
Folded Greeting Card, Size: 5" x 7", Paper: Signature Matte, Envelopes: White
Zazzle Reviewer Program
Our daughter has enjoyed her Dad's jokes during her lifetime. She will get a "kick" out of this card. Everything about this card is great for the person who will receive it!!
5.0 out of 5 stars rating
5 out of 5 stars rating
By AnonymousSeptember 30, 2025 • Verified Purchase
Folded Greeting Card, Size: 5" x 7", Paper: Signature Matte, Envelopes: White
A great card for a math oriented grandson! .

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Folded Greeting Cards
sandra boyntonmathmathematicsgeometrycartoonhippohippopotamushippopotenuse
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sandra boyntonmathmathematicsgeometrycartoonhippohippopotamushippopotenuse

Other Info

Product ID: 137911089881727763
Created on: 2/16/2014, 6:14 AM
Rating: G 
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