Pythagorean Theorem Day 2017 8-15-17 August 15, 2017 tshirt-TH

Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 65% Cotton, 35% Polyester, Imported, Machine wash cold with like colors, dry low heat, Pythagorean Triple Day is here and you need this t-shirt. The last *primitive* pythagorean triple day was 5-12-13, and the next one won”t be until 12-16-20 and 7-24-25. Get your shirt now to arrive before August 15, 2017, Pythagorean Theorem Day or Pythagoras Theorem Day is celebrated when the sum of the squares of the first two digits in a date equals the square of the last digit in the date. Lightweight, Classic fit, Double-needle sleeve and bottom hem