This adorable “Acute Triangle” t-shirt is perfect for math class or anywhere. It is soft and lightweight, with the right amount of stretch. It's comfortable and flattering for both men and women.

• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Ash color is 99% combed and ring-spun cotton, 1% polyester
• Heather colors are 52% combed and ring-spun cotton, 48% polyester
• Athletic and Black Heather are 90% combed and ring-spun cotton, 10% polyester
• Heather Prism colors are 99% combed and ring-spun cotton, 1% polyester
• Fabric weight: 4.2 oz (142 g/m2)
• Pre-shrunk fabric
• Shoulder-to-shoulder taping
• Side-seamed
 
Here are some more cheesy triangle jokes:
 
What kind of triangle is a tortilla chip?
An i-salsa-les triangle
 
A shout out to the guy who played the triangle with our band for the last few years...
... thanks for every ting.
 
Where did the square go after killing the triangle?
To prism.
 
So a triangle and a circle meet each other and the triangle says: "you're pointless."
To which the circle replies: "that's how I roll!"
 
My room is like the Bermuda triangle
stuff goes in and is never seen again.
 
What newspaper does a triangle read?
...the hypotenews
 
What's J. K. Rowling's favourite side of a triangle?
The Harrypotenuse
 
A circle is circular, a triangle is triangular, a rectangle is rectangular, but a square is...
You. You're a square.
 
Two triangles are having difficulty buying an apartment.
It turns out they needed to cosine.
 
How do triangles talk to each other?
Sine language
 
Nobody in the world knows what those tiny sideways triangles on a keyboard mean.
Well, more or less.
 
What do you call a triangle with four sides and a serious drinking problem?
A wrecked angle.
 
If you build a triangle with sticks.
Would it be, twigernometry?
 
What did one triangle say to the other triangle?
Hey, we should get together and square dance!