The Forty Seventh Problem
$24.99The Forty Seventh Problem Masonic t-shirt draws the proof every Fellow Craft is told to study, the forty seventh proposition of Euclid's first book. It states that the square on the hypotenuse of a right triangle equals the squares on the other two sides. Masonic tradition credits it to Pythagoras and reads it as a call to love the arts and sciences. In English lodges it is the figure on a Past Master's jewel.
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Ring-Spun Cotton
100% cotton, 5.3 oz
Timeless Designs
Created for Brothers
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Unworn and unwashed
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The Forty Seventh Problem Masonic t-shirt draws the proof every Fellow Craft is told to study, the forty seventh proposition of Euclid's first book. It states that the square on the hypotenuse of a right triangle equals the squares on the other two sides. Masonic tradition credits it to Pythagoras and reads it as a call to love the arts and sciences. In English lodges it is the figure on a Past Master's jewel.
The plate lays out the three squares on a 3, 4, 5 triangle, labels them with their areas, and adds a measuring rule, dividers and the Square and Compasses with the letter G, with the working shown the way a geometry copybook shows it.
The gold and blue enamel of the squares carry on every shirt colour, and the sepia notes read clearest on white.
Our foundation tee: midweight ring-spun cotton with a clean, classic fit. Pre-shrunk, tagless, and built for every day.
- 100% ring-spun cotton, 5.3 oz
- Classic unisex fit, true to size
- Chest print up to 10.0″ × 12.0″
- Printed in the USA, made to order