Math puns are the first SINE of madness! Mwahahahahahahahahahahahahahaha!
Who’s the roundest knight at King Arthur’s round table?
Circumference.
How do you stay warm in a cold room?
You go to the corners. It's always 90 degrees.
Where do mathematicians go to die?
The symmetry.
What's the difference between cake and pie?
πr2, cakes are round.
What’s a teacher's favorite tree?
A geometry.
What do you call a dead parrot?
Polygon.
I had a conversation with a Möbius strip.
It was one-sided.
Why does the blonde stand in a corner when she's cold?
Because it's 90 degrees.