A long-standing Pittsburgh mystery is growing again!Observant Pittsburghers have surely noticed all of the colored protractors glued to things in public places across Pittsburgh’s neighborhoods.
WEBVTT 3 NEW AT 5:30-- A MATH MYSTERY IN PITTSBURGH-- IS BACK!! REMEMBER THESE? PROTRACTORS-- USED TO MEASURE ANGLES-- GLUED ALL OVER THE CITY! YOU REALLY DON'T NOTICE THEM UNTIL SOMEONE POINTS THEM ...
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