Pentagon Flower and Polygonal Jokes
Frisbee golf is a sport enjoyed by many mathy folks. Almost certainly, this is a result of the physics that surround the flight of the disk.
When a ball dreams, it dreams it’s a Frisbee.
— Stancil Johnson
I love Frisbee golf, because I can make the Frisbee bend and curve around trees in a way that I’m not able to do with a real golf ball. But I also love it because Frisbee golf courses are typically located in beautiful natural settings, like my home course at Bluemont Park in Arlington, VA, which meanders through an urban park with trees, flowers, and a creek.
While playing a round with my sons yesterday, I encountered some flowers with five‑fold rotational symmetry. Taken by the perfect pentagonal shape in the middle of the flower, I snapped a pic to share with you:
Speaking of closed plane figures bounded by straight sides, here are pieces of some recently overheard conversations at the Icosagon Cafe:
- “He’s degenerate, but I say, ‘Let digons be digons!'”
- “I don’t have the energy for another attempt. Trigon.”
- “That hot chick walked away. Pentagon.” (Warning: OFFENSIVE; see definition 2 of pent in the Urban Dictionary. )
- “I took an antidote for the wizard’s curse. Hexagon.”
- “I just looked at the calendar. Septagon. Octagon. Nov is here!”
- “Nonagon. They’re all here!”
- “Someone stole my pack of cards. Decagon.”
- “My parrot just died. Polygon.”
Just outside the cafe, a hendecagon was walking by…