Arc Arrow 1

Author:
Ryan Hirst
The arc is oriented. It respects the equivalence of these three statements: Arc BC subtends central angle BAC, There is a one-to-one correspondence between points on arc BC and points on segment BC. The arc respects minimum rotation. We may then preserve measure: |BC| (magnitude) is the distance from B to C (direction). |∡BAC| (magnitude) is the angle from B to C (direction/sign).