What number is Triangular, Hexagonal, a Pentatope and Composite all at the same time? 1️⃣5️⃣, and it's also the number of days until #thebestsummerofyourlife ⏱#SadCauseTheyreTooOldForPreCollege 👵👴#MathIsCool 🆒 #15is14plusOne 🙄 (at The University of the Arts)













